Yeah, I swap around a lot depending on the situation. I used the same gear level 50-125, swapped out the hat, same stuff until level 130, swapped out for Venus, level 140 swapped out for cat paw 140, and then at level 170 swapped out for Afrit and Ult Diadem.
Trials are definitely not an issue. I volley kicked everything. I prefer evolution for Skull because it's so easy and I'd rather just evo than have to use VK+OP. I plan on switching over to an HP shield soon, I just love seeing everything in Tap1 die ha