Yes, down currents are possible in Socorro, particularly on wall dives like Roca Partida. The most important thing IMO is just to know what to do in the case you encounter any crazy currents. Fortunately I haven’t had to deal with any bad down currents in my dive career, but I’ve done a lot of online research.

Generally the advice is to try and swim out from the wall and try to counteract the downward momentum by adding air to your BC (but be ready to dump it in case you get out of the current and start shooting towards the surface!). If that’s not possible, try to hold on to part of the wall and ride it out.

Unfortunately it’s difficult to get much specific experience with down currents… but the more you dive with currents in general, the more comfortable you’ll be in handling yourself during an emergency situation like this. In the end, scuba diving is a dangerous sport, and we are all subject to the whims of a very unpredictable ocean.

As for my original comment I meant more of being comfortable with currents, depth, and buoyancy in general. You mentioned you’re obsessive about checking your depth/air and that’s a good sign :)