I really think it won't bother your playing... my husband said it felt a bit strange once he first started playing after we were married, however it didn't take him long to get used to it....

I wouldn't have a problem with him taking it off to play to practice... however I think I would have a problem with him taking it off to gig somewhere. He is married, and I know if the situation were reversed he wouldn't want me representing myself as being single in a situation that could be extremely tempting. (But that is a completely different reason)

I think if you want to wear it, you will learn to play with it and it won't matter at all... but like anything it will have a learning curve that you will want to get through.