Ooookkaaaay... looking at http://www.trinusvirtualreality.com/psvr/
This is straight up indie-modding. There is a long tech part on getting PSVR and controllers working with this.
I'm going to make the assumption that your son is highly tech savy and likes messing with experimental stuff.
Looking at the questions you asked in the original post, (sorry), these are not the right questions you want to ask.
Main Question: Has anybody gotten this to work?
Secondary: How well does it work with VR application?
Oooh! Tom's Hardware did a nice article on it!
http://www.tomshardware.com/news/psvr-on-pc-trinus-psvr,33461.html
>> "Trinus PSVR is experimental, beta software, so don’t expect a walk in the park. I ran into several problems trying to get the PSVR to work with SteamVR that left me scratching my head."
SO! In conclusion... if your son is willing the risk of buying hardware for a BETA software package, then go right ahead. Me personally? HELL NO! That is risky as hell, if you haven't seen somebody else get it to work, and know the reviews.
But yeah.. read the Tom's article. It goes decently in depth.
And again.. I'd recommend your son save his $$$. Of course, you might tell him that and he'll be all, "YOU DON'T UNDERSTAND MY YOUTH CULTURE!"
And you'll respond exasperated, "What are you even rebelling against?"
And your son will reply, "What'cha got?"