Yeah Andy, I was just milking the guitarist tone quest aspect. Wooden beer crates went out long before my time too just for the record.
But in reference to the question of the amp being on the floor and any loss for it being mounted on a chair or stand etc, I can't say I have noticed any losses. In fact for me, the amp being on the floor is less desirable as I wouldn't be able to hear it. As Andy said, it is good to be able to get the amp to near ear level. Mine is angled upwards and I can hear it very well and have it at a better level in terms of volume. The stages are not consistent, some are carpeted , some are hollow and for that reason I can see no advantage to putting it on the floor. On a stand, I can control things.