Good call keeping them out of walls. I personally don't use sharkbites for anything. Same with PEX pipe. Probably being overly cautious but I have never seen PVC or properly soldered copper leak which is all I use.

Alot of the stories of pex and sharkbites leaking probably has more to do with its reputation for being easy attracting less experienced people to DIY it than it being an inferior piping method.