I think clients, or rather men in general, like the natural taste as long as it's clean. Some seem to really love it, especially around mid-month, although the techniques often leave a lot to be desired. You don't need to make it taste of fruit. Although it's healthy for you to drink anyway, so why not. I'm with you, if the man knows what he's doing, it's one of the perks of the job.
Pinapple juice is what men are supposed to drink to make their semen taste better. I must say I've never noticed it taste of pinapple though - lol.
Whatever you do don't squirt deodorant around there. They hate that as I discovered to my cost once.