I have a friend with a Bachetta, but I have yet to run into anyone using under-seat steering on a bent... Is it more difficult or uncomfortable?

Years ago I knew this guy with a recumbent that probably wasn't more than 3 feet tall (the bike, not him ). It had USS, but I've personally seen none since. He was a pretty .... ahem .... unique sight on that bike: 350 lbs in Lycra, long hair and a big ole' Blackbeard-style fuzzy beard! Of course, he was out on a bike when I wasn't so I can't find fault in that!