Do it! Keep a spare guitar around with just that tuning! Even allowing for inflation, nice guitars are still incredibly cheap by historical standards. If you want an acoustic,I don't think you can go wrong with any guitar on this first page:

https://www.sweetwater.com/c600--6_string_Acoustic_Guitars?a...

I'm less enthusiastic about the low-cost electrics; probably want to go at least $200 and maybe something from guitarfetish.com instead.