That is why I run banana plugs with my set ups, just to try out different pairings etc. very easily.
My M22's and VP150 were mostly there just to eat up space during that picture but I did eventually run the M22's with the M80s and the M60 was my center which I did run with the Vp150 just to see how all this speakage sounded. It was too much for my little space and with all that height everything just hit you like wall. It was from all of this testing that I decided a vertical center really was a much better way to go. I still prefer the M60 look to the M80's.