It was indeed a good idea to go there, and I did manage to train myself. Some of them are quite good given that they're beginners. However, the common problem is that they're way too silent when doing kendo. Kiai is not enough, which is in fact one of the most important things in Kendo, and the first thing one has to learn to do well. It seems that this is not emphasized enough in many places I've visited.
Nonetheless, their potential is great given there are several sempais in the club who are passionate about kendo. With the right instruction, they can become strong quickly, at least I mean winning in competitions. Dresden is exactly one of the examples..
Anyhow, I'm glad to find a bunch of hot-blooded young guns to train with!