from my experience grip powder ruins towel grip very fast, it becomes sticky and smelly. if you are not playing a tourney, i can't justify the use of it...
Yes, but if you play an intense night or tournament, the performance and feel of it will lack pretty fast and your grip will feel like a wet dead rat.
Hehe, seeing again the junior championship reminds me of this thread. Kusuma, one of the winning Indonesian uses Towel!