As far as a "suck in the mouth" method versus "direct inhale".....I had to think about the "direct inhale" for a minute to identify exactly what that was. I've never, ever smoked like that. I always took a draw into my mouth, then inhaled it.....slowly exhaling out of my mouth and nose. Or the good old French Inhale, pushing it out with your tongue and inhaling through the nose. Everyone I've ever seen smoke a cigarette does that....some with more dramatic effect of opening the mouth to show the smoke before inhaling, or maybe pushing a little out then inhaling it back in.
I have never seen someone "direct inhale" a cigarette....and if I'm reading it correctly as inhaling at the same time as sucking....well, the only time I've ever seen that was when someone smoked a.....ummm.... non-tobacco product. Or, first time smoker that coughed their heads off.
Heh, non-tobacco... yeah, know what you mean. And that's a pretty close description to my inhale of tobacco cigs. My "drags" were pretty deep. So much so, not much smoke escaped when I exhaled. Though I wouldn't say I "held" quite the way folks do with... erm... non-tobacco products?
I would've thought it the other way round. I've seen the "French inhale" more than once but not a lot. But maybe "direct inhale" is a bit off as terminology? I caught their meaning right off but now you mention it, it does seem it could be misleading a bit. Then again, who ever bothered to sit around making up exact terms for our smoking habits eh? We just smoked.
Wondered a moment if it was a regional thing but that wouldn't be right unless there's more than one DFW. I'm just outside Austin which would put us in the same state. So scratch that one.
I haven't quite yet totally escaped regular cigs (close though) and had one of my "I wanna real one" urges last night. Which urge I definitely don't understand given I've come to prefer vaping over "real ones" and always end up kind of rushing through the cig and not particularly enjoying it. 'Course, maybe that'll help bring the "real one" days to an end.
But I paid closer attention to what I was doing. And while a lot of the smoke was being pulled into my mouth to be inhaled later, my lungs were definitely the driver. I was inhaling like taking a breath. It was both. Inhaling into the lungs and sucking into the mouth. Vaping, it's almost all mouth. In fact, if I slip and revert to old habit, I cough. When I "hold" a moment in the mouth then inhale, I'm fine. But if my lungs try pulling the vapor in like smoke, it hits the back of my throat funny and I end up coughing. Not sure why holding it even just a moment makes a difference but it does.
So anyway.
One way or the other, the lungs are more involved in smoking and not so much in vaping. It strikes me as more like a pipe or cigar. Both of which most folks I knew sucked the smoke into the mouth for the tasting and didn't "inhale" as much as cigarette smokers. And everybody's different anyway. I know my draws with cigs are deeper than average. I've had people comment now and again over the years that they could "tell" I was a long time, heavy smoker. Not much smoke escaped when I exhaled. Often, I didn't "blow" out the mouth, just a bit of smoke out the nose. Not much though.
Think that may have to do why I still tend to "supplement" with two or three regular cigs a day. The amount of nicotine in the cartos (prefills) I have are in the medium (ish) range. So I have "blanks" and a higher nicotine liquid on their way. Do my own fills and maybe that'll kill the last of the "I wanna real one" urge? Seems what I tend to do is crave one like, well, now. Morning. Coffee time. Kind of like I need a "jolt" of nicotine then can "coast" on vaping?
In fact, talking about it, I just did. <mutter> <grumble> Well, there's three cigs in the cabinet and I ain't buying another pack today. He said sternly to himself.
I had to get myself to slow down, "suck" more than "drag" and emphasize the taste. You know, have the vapor in my mouth longer so I get the flavor(s) and, I assume, the nicotine. Then do a shallow kind of... I guess inhale, I'm exhaling the vapor through the nose more than drawing it into my lungs as I would do with a cig.
But that all is why I wondered if the OP was doing a deeper, more lung involved draw like a regular cig. That'll get me to coughing every time.