Bearded dragons like to climb to a good vantage point both for basking and keeping an eye on their environment. I notice this tendancy whenever I let my bearded dragon lose in a room. He seems to go for the most sheltered high point he can spot.
I am sure when you buy a bearded dragon he will use the ramps you have set up. Just make sure you set up a basking light near one of the ramps (or just at one end of the cage) so he can get the temps he will need (95F-110F, the higher end for younder dragons) and there is a cooler area in the enclosure from him to go if it gets too hot.
They certainly do enjoy running a bit on the ground and jumping up on rocks and low branches or stumps. Mine seens to love jumping off his basking log, climb up his shelter, jump from there to the rock I have, then from the rock back onto his log. It's quite fun to watch himn do this especially when he mistakes the reflection of his log in the back glass as the real log. Then he winds up on the floor between the back and the log looking miffed.