All I can say is if you managed to destroy the lost vape skar and a radius (I'm impressed btw), I don't have high hopes for the G, the skar has been the only mod my gf
hasn't managed to destroy. The G is not anything super durable, it's very well made, but out of the same materials as all the other mods. The mod and board under normal use should last a long time but don't expect it to handle a bunch of drops well.
I wanted to strip mine down so that I wouldn't have to have to deal w/ flaking but after rubbing a little paint off I'm now aware this isn't stainless steel, it's some kind of light colored alloy, probably zinc bc it's too heavy to be aluminum. Be aware of how soft zinc is though, compared to steel its like butter.
Just do what I do for my gf, tell her/yourself, that you're only allowed to destroy one mod every few months or you'll stick with an ego till the 90 days is up, that way you'll be more careful.
I think the toughest mod I ever owned (apart from mechs) was this dna 200 I put in custom enclosure, like this one. Thing was tough as hell, bc all it was, was just a solid chunk of CNC'ed aluminum.
Another good one would be the boxer, though the screen is a bigger target for pokage.