Here we go again. This subject seems to be timeless. It's been discussed over and over again in many threads. I know everyone has their own opinion about it. Lomcovaks (BTW that's how you spell it...translates as "shaker") in full size aerobats can be done in lots of different forms. Apart from 3 axis and throttle gyroscopic force becomes a 5th variable which gives you lots of possible variations of this maneuvre. The most common one is the conical lomcovak where plane spins in a conical motion. In models there doesn't seem to be enough gyroscopic pressesion to enter this maneuvre with authority. The only gyroscopic maneuvre,I know we do with our models, is torque rolling. I could be wrong there might be more but TR really stands out.
I don't want to start another war of words. I'm definetly not saying models can't do it but at the same time no one has ever showed me one.