I believe it is dealt that way when played in the Pot Limit fashion. If you are playing fixed limit, deal it like traditional stud games
Why does it change for pot limit?
It is hard to find a steady 7O8 game, and its hard to find a limit game. We had one end about 6 months ago, it went for about a year.
Traditionally you're trying to win about 1 to 2 bets per hand, played properly its a very grindy game. I played often and I know how to play it well, not that I always do, but when played Pot Limit, I'd likely be better than the average player, and its typically easy (especially if I'm catching cards) to bust players.
At one of the meetups, I was stuck, we played a round of TP&R and I was able to get a head; I was catching cards and getting called. The next time we played that game they changed it to TP&R with the last card up

(easier to see if you're likely beat)
If you don't typically play 7stud 8 or better, you're playing for the low, and when you land 123 or 3 cards under 5 suited, you pound it, pot pot pot till the cows come home. You'll have people chasing straights and flushes, or unable to drop 2 pair, and when you land a 6 low strait or flush and scoop a pot its a blast!