It comes down to personal taste, wear whatever you want. With that said, I think pants look a lot neater and more professional. Take Bruno from Lisses video and you might see what I mean. He is doing nearly everything Belle does yet Bruno is wearing mainly shorts and it looks sloppier. The few clips he has pants on look cleaner to me.
I used to wear shorts but switched to pants for a couple reasons. One is that I think they look better, the other is that i feel like shorts restrict me during some jumps. When I am going to do a big jump in shorts I always start pulling them up over my knees because it feels uncomfortable. My adidas athletic pants are super flexible and durable. Ive been wearing them for 6 months and they are still like new.