Any reason not to place stand mounted speakers upside down?

Pierre Spray of Mapleshade Studio oft opined the best listening position was actually sitting on the floor and I think he might have been right. So flipping the speakers on their head might work out very well after all. 

What model Harbeth are you using? What is the height of your stands?

Thanks for the replies! @millercarbon – he did not say that. I misinterpreted one of his responses on the Harbeth forum. He was referring to a speaker in a confined space. Though he did say that it shouldn’t matter (in terms of bass) whether the woofer is on top or bottom.

@teo_audio – I follow you, though it is interesting that Shaw, who certainly is science oriented, insists that Harbeth perform best when the tweeters are at ear height. Presumably he has designed that way.

Brad – thanks for the interesting input.

@yogiboy 

I am currently using the P3s, but will be using 30.1 or Super HL5+, and the Osiris stands woulds be taller than ideal.

Why fool around? Get the correct stands!