To be honest it does'nt matter if the scaffold is set up upside down and stretches to the moon, the most important thing is they do a nice job.
When the jobs finished the scaffold will be gone and forgotten about but the job will always be there to look at.
Try not to be a pain and pee them off by moaning about it too much, if they don't like you they'll just get the job done and dusted as quick as possible, if they like you they'll do it as if its their own house doing it with that little bit of extra care.
In my fitting days working on the roofs on two houses a week for ten years I got to meet some great customers and some horrible ones, the ones who did us tea and bacon sandwiches in the morning used to get a few extras like i'd run up the roof and point the 5 loose ridge tiles even though it was nothing to do with the main job we were getting paid to do.
Scrumpyjack i'm not saying your a horrible customer, lol just saying in general the customers who didn't moan used to get a few freebies/a more perfect job