I can't believe this just happened. I've been playing with this char for days, training its stats. Already got 100+ int and wis, and was waiting for the spider silk golem to spawn so I could clone the scroll of change material and some ommel fluids I was saving. On one of my praying rutines I intended to switch my black diamond scimitar for an ukku steel short sword for Loricatus to harden to adamant (or try anyway). Here is were things went awfully wrong. I was on gloomy cave level 5 and I was hovering over the lake, and pressed E to change equipment. Then, I accidentally pressed E (belt slot) instead of F (right wield slot), resulting in immediate drowning. Apparently, even though I actually had not unequipped my belt of levitation yet, just choosing the belt slot automatically unequipped it before even accepting or choosing another belt.
This is so wrong I can't explain the level of frustration I have right now. I uploaded the most recent in-game screenshot I had so you can see what a nice character I lost due to this nonsense. I had orichalcum gear and perma invisibility, haste, esp and telecontrol, killed Elpuri, Ur-Khan and Golgor Dhan. Basically a perfect character lost in the most ridiculous way ever.
I'm pissed.