I am sure you could come up with a way to incorporate both saws into one bench and if that is what you want to do then I think you should do it. I would not recommend it though, I think you would be better off with separate stands. I have a separate stand for my table saw and my chop saw and I have found it be very practical, at least for me it has been very practical. Your situation may be different than mine.
From my own experience I can give you an example of why I wouldn't recommend both saws on one bench/stand. A few months ago I helped a friend do some work on his son's house. He came by with his truck and we removed the chop saw from its stand. We put the chop saw into his truck and we folded up the stand and put that in the truck too. It took maybe two minutes tops to do that. If the shop saw had been mounted into a bench/stand of some sort along with the table saw, I doubt it would have been that simple to remove and even if it were easy to remove, what would we use for a stand once we got it to his son's house?