You can't use a velcro belt in a "proper" lifting fed. You are limited to a 100mm x 10mm thick and it has to be either prong (1 or 2) or lever.
If you have to adjust your belt because you had a big meal, you are using it wrong. Probably too tight to start with. It needs a bit of room so that you can push your gut out into it.
Frankly, it all works the same. Just that a lever is much, much faster and easier to put on and take off. Otherwise, they are all belts.
HURR IPF IS THE ONLY REAL FED xD
If it needs room and not putting it on that tight anyway how is a lever much much faster.
Just the process of getting the prongs into place then getting them out. Its a common sight to see lifters struggling with their belt, particularly if they are new. It's similar to shoes that have laces or shoes that have velcro or shoes that are slip on. Its not a problem initially but if you have to put your shoes on 10x per day, after a while, you gonna go with the slip ons.
In practice, they are pretty much the same, with double prong being slightly more stable under load than single prong. It's just getting da fukkahs on and off so many times in a training session that will have you wishing for a lever belt.
Jesus Christ powerlifters are fucking useless. Take me a couple of seconds for me to put the belt on tight enough I struggle to breathe.