I had lapband in 2005. Had it removed in 2009. Sleeved 4/10/18.
My immediate post-op experience after being sleeved was rough. Surgeon said I had a lot of scar tissue from the lapband, which took him almost twice as long as a normal sleeve to take care of. That means I was under anesthesia longer than usual, so I was REALLY groggy for about 12 hours after surgery. I had no energy to get up and walk like the others on my hospital unit. I had no desire to sip-sip-sip and I think I looked a bit like I'd been hit by a truck. I certainly felt that way.
Once I got through the immediate post op part, I returned to normal pretty quickly. Other than some fatigue, I was feeling back to normal after about 6 days. I went through the normal progression from clear liquids to full liquids to mushies to soft, etc.
When comparing the two, I'd say that the sleeve has a lot more restriction. After a certain amount, I simply cannot eat. If I do, I suffer with discomfort and a lot of foam/saliva/slime. I was never able to tolerate fills in my band, so this was something relatively new to me.
If you have any sort of GERD, I caution. The sleeve tends to make GERD worse. I'd say it's a little hit or miss in that department, but it's certainly something to discuss with your surgeon. I started getting heartburn about 3 weeks out and I've had some times where I was really worried about nighttime reflux, but I seem to have it under control right now.
As a revision surgery, it is likely you will lose slower this time around. I read it on here and I read other information on the internet, but was still disappointed at the slow weight loss. I'm certainly happy it's coming off, but it is much slower than first timers.