All have DTC. I turned mine off, it rides much better with out it on rough roads (and you can't turn it off on the fly).
I suspect ABS would be similar, if you only ride smooth roads, it's probably helpful. Anywhere with washboard or similar it can be a pain as it defeats the brakes if you get chatter. (or at least that's how it's worked on other vehicles I have had it on, can't speak to the ABS on the Multi since I don't have it, but I assume it would be similar to the DTC). I believe it is defeatable on the Ducati, so I don't see having it as a downside, but for normal or bad road riding, I think it's a pro to not have it. Maybe in track situation it would be a big help or if you do end up in black ice situations.
'10 Multistrada 1200 Std ('11 - current)
'07 Super Enduro 950 ('12- current)
'02 Superhawk (37k miles, '02-'11)
'96 KLX250R - kind of street legal - ('97 - current)
'90 KLR 650 Tengei ('95-'97)