I have wondered myself why there is no centers stand for a TW.
But many dirt bikes or dual sports suffer from being ridden in places where a center stand will drag or get ripped off the bike during those tree jumping escapades, etc.
I have one on my Moto Guzzi V7 and love it.
I do wish we could have something.
Maybe I need to invent it and manufacture one.
Time to go into the shop.