The 100mm? trunking on the bottom does look big but better than having another run. Your install looks really neat so far and not that noticeable. I was keen to have the minimal amount of trunking on mine too but my loft access is not great as it's not possible to get to the eaves. If it was, my master bedroom would have been run down to the eaves and in to my office trunking, which would have saved me the £450 for the scaffold
I looked at a picture of my house without the trunking yesterday and it obviously does look better without it but it still looks neat enough it doesn't bother me. I rarely look at my house any way and when it was super hot yesterday I certainly did not care about the trunking on the brick work
Where did they get power from in the end?