Spiros,
You're right. The rear safety is a firing pin block. When it's up, it allow the firing pin full travel to strike. When it's down, it blocks the firing pin. It's there to block the firing pin in case you drop the gun or something hits the hammer when it's at full cock. It isn't really a safety though, so don't fall into the temptation to use it as one. The only real safety is the one on the frame. Unfortunatly, the safety also functions as the take down lever. I've had mine "come apart" racking it with the safety on. For range use, I never use the safety and rely 100% on the firing pin block. Around the house,(and at work when I had it there), I always left the gun off safe, and with the firing pin block down, but without one in the chamber. I'd never recommend that method for carry though, since the low cost of these guns makes me suspect how good the metal is in the block. Take down and maintnence is super easy. Drop the mag, rack the slide a couple times to insure and empty chamber, rotate the safety to on and pull the slide all the way back and up. That exposes the barrel and frame for cleaning, and the slide also. That's as far down as I ever had the need to take mine for cleaning, except for a few times taking the grips off to blow crud out. The grips come off easy, and there's no little pieces parts under them to lose. The only other place to make sure is clean, is the trigger disconnect right above and underneath the left grip. I don't know about .32acp ammo, but .380 ammo (factory) is exceptionally clean shooting, so I rarely need to clean there. The only other caution I can give, and my main reason for no longer shooting mine, is to be extra careful not to damage the pot metal magazine catch. Once that puppy breaks, I have a terrible eeling it's all over for it.
If you got a decent deal on yours, AND/OR it has no "history" with you. like mine does with me, I'd say shoot it until it breaks, which with reasonable care should be a long time, considering the low impulse of the .32acp round. Those cheapy little GT's are just too darned accurate not to enjoy. For the front sight, you might want to try a drop of whiteout, or use a match or a lighter to blacken it to add contrast.
As far as recoil goes, the .380 has more than my Firestar 9mm, but less noise. Since my ears are about gone these days, the extra noise for me is a non issue in a home defense situation. Overall, a .380 isn't all that bad for moise and recoil in the right gun. It's a good round, but my desire for it has pretty much cooled off over the years.
Bottom line is would I buy one in .32acp if the price was right? Heck yes, but only if it was priced right, and only because I don't own a .32acp right now. Would I recommend it to someone? Not really, there's a whole slew of better out there right now. If you've already made the plunge though, enjoy the heck out of it. Contrary to what others may think, I'm very pro low end guns. If it came down to a GT vs a PPK though, no question about it, the PPK would be what I would recommend. Quality pieces are made for several lifetimes of enjoyment and service. Low end stuff works great until it breaks. FWIW, I don't consider anything CZ to be low end except the price.
(Hope my ramble makes sense)