Yeah, the gunmetal looks like it might be kind of a cool, different look, but I'm not thrilled with the gold trim look of these overall. Hopefully, these will let you use another 510 drip tip like the V1 did. Other 510 drip tips actually fit very well on my V1 Siren. I hope they drop the gold trim in production, but we will see.
I only just recently figured out how to get my 22mm SS Siren V1 to not leak on me every time I refill it (by seriously tightening up all loose threading and using a 3.5mm coil with lots of wick). I hope the V2 will work a little better out of the box, but I suspect it will still need a big coil using lots of wick. Not perfect for TC MTL use.
I actually like the Siren's diffuser for MTL use, as I feel it helps provide better (but still concentrated) airflow over more of the coil, reducing hot spots. Using that diffuser I get pretty good (though not perfect) results when chain MTL
vaping. Dry hits are not usually an issue, but I also prefer a slightly airier MTL draw then some other folks do.
The V1 Siren's vapor is not as dense and flavorful as I prefer though, but it has a nice
juice capacity (once refill leak issues were resolved). What is the
juice capacity of the V2? Is it a 22mm tank? I only ask because nothing larger than 22mm will fit on my iStick Pico 75s.
I wish the bell cap on the V2 tapered more at the top, instead of just being squared off like it is on the V1. I think a tapered top would help provide better flavor and greater vapor density, but I suppose it could also lead to a hotter running vape.