I liked the CE2s I got but I thought they were tough to fill on the go and the durability of the cartos themselves varied greatly from one to the other.
I agree these might be a little fragile for knocking around in pockets and purses. If they crack or come apart you could have a little mess.
For vaping in the car or around the house, they should hold up pretty well.
On filling them...
I've just modded my standard e-juice bottle. Trim the tip a bit and Super Glue a hypo needle on it (could also do this with the included plastic hypo needle). Don't need a syringe anymore. For around the house where I'm not so worried about spilling/leaking...I just leave the middle ring out. I keep a nice heavy drinking glass nearby to prop the PV in when I'm not holding it.
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