As do I, in the racing world especially and it was never viable. It was always done by old school people that couldnt get their head around EFI and it turned out to be a joke. The primary reason you use EFI especially on a big twin is you cant get the power and the clean low end operation from carbs you can with EFI. Current big twins run 70mm throttle bodies and have huge power and good drive-ability. Show me a carb with 70mm throttle bodies that you can package in a twin that will give the required power and clean low down carburation.
A Guzzi MGS-01 a bike never designed to be used on the road by Guzzi and therefore no issues with emissions uses 50mm throttle bodies. Why didnt they just fit carbs if there was an advantage? Because it would be foolish to do so. Does anyone even make a 50mm carb that would fit and you still had a wrist strong enough to to lift the slides?
I was around in the racing world when the Ducati 851 started racing in the 80's and a very well known tuner in Australian Superbikes ditched the EFI in favour of carbs and it was a joke nobody ever tried it again. Its basically a knuckledraggers mod, you know, like cutdown or removed mudgards. straight pipes no indicators and crossply car tyres type "custom bike" builders.
Ciao