Removing and reinstalling the loader can be pretty variable. Sometimes I'm lucky and it's under 5 minutes, sometimes it's more than 10. If I had a flat concrete surface to park it on it might be easier, but mine lives in the yard. I use some combinations of the parking jack, the curl hydraulics, and usually the lift hydraulics in float. It usually takes a block under one corner of the bucket/forks to get the frame to twist ever so slightly to make the opposite pin line up. Usually I'm hammering on the pins. Perhaps there's some magic procedure that I haven't figured out. I don't think I'm getting better with practice.
My dealer also said that they had lifted 1500 lb hay bales (with pictures to prove it), but they didn't have a spec. I messaged Bonatti's facebook page using google translate and they said 350kg. I challenged them that I had seen photos of it lifting 700kg hay bales and they responded that it could lift hay bales but 700kg seemed excessive. The most I ever lifted is right around 1600 lb, I had it no more than 1' off the ground, and I had so little weight on the back tires that I could barely steer. I definitely wouldn't try 2000 lb.
With the loader near the ground, the leverage ratio on the lifting cylinders to the pins is about 1:5.3, the OD of the lifting cylinders is right at 3 inches. Even if the wall thickness of the cylinders is 1/4" the lifting capacity at 2300 psi at the pins would be over 4000 lb. So maybe it can do a lot more than I think it should, but it seems awfully sketchy. My 1600 lb lift was a 8" x 2' x 8' section of concrete wall laying flat, and the curl seemed just about maxed. Even with the hydraulics set on "slow" mode, I had poor control lowering it (just blipping the joystick caused a large motion).
A few other notes about the loader:
1. The global/euro attachment system is out of favor in the US. Trying to find loader implements other than skidsteer/quick-attach or JD is difficult.
2. The included fork carriage is class 1 (13"), which is rare, so if you e.g. want longer forks you'll be hard-pressed to find them. Most other compact tractor loader fork carriages (if they're ISO standard) are class 2 (16")
3. As I noted earlier, the mounting bracket that stays on the tractor is a minor pain for PTO implements. I've included a photo to show this better.