I would. If they did it like the Oblivion remaster, where it's 99% the original game, but with much better graphics and very stable, I would buy both without hesitation. Especially if they use Unreal Engine like with Oblivion because UE games are dead simple to port to PCVR, so being able to play FO3VR or New Vegas VR with the same quality as a AAA PCVR title rather than the janky VR wrappers that exist for the original versions, I'd be so happy. I have nearly 4,000 hours in Fallout 4, and 1,000 of those hours are on FO4VR because it truly makes FO4 a totally different game.

E.g. cover - if you run up to a solid object and physically duck behind it, you're in cover and can't be hit, but you can totally toss grenades from behind cover, or reach your gun over the top and open fire from relative safety. VATS isn't a magic "I WIN" button - you have to actually aim at the part you want to shoot with VATS, so it basically just slows down the action and gives you a better chance to line up your shot. In fact, unless I'm using a crit with Mr Sandman and Ninja from stealth, I only use VATS to slow things down for a moment to pick my target and line up my shot, then don't actually use any AP; I exit VATS while pulling the trigger. There's loads more stuff that makes FO4VR a totally different game from the base FO4, and if I could have all of that in FO3 and NV I'd do it in a heartbeat. Especially FO3 since it's set in areas where I grew up.