I'm trying to finalize the design of my bench before building. I'm going to do a Roubo style bench, with a leg vise and a sliding vise. I keep changing my mind on the tail vise though. I was originally going to to a wagon vise, but now I am thinking that I don't really think I'll like having that big gaping hole in the front corner of my bench even when the vise is closed. I've read that the conventional tail vise can often have trouble drooping...and it is pricey and a bit more work. There is always the option of just adding on some type of quick release vise on the tail end of the bench with a wooden jaw. All options seem to have pros and cons and I every time I make up my mind, I seem to change it the next day.
Any advice or input on the subject would be appreciated.