I have Horsebows, ELB, Recurves and Longbows, I shoot mostly Longbow during peak tourney times but I like to have a break every now and then and have a week shooting maybe the Horsebow.
Most of my Bows are similar draw weight and performance so adjustment isn't that difficult, most of the time I can switch bows quite quickly, I think because I shoot alot and international tourney at high level I do sometime find myself hitting a brick wall with my Longbow and making a switch to another Bow for a week helps me come back to the Longbow feeling fresh, Think it helps remind me to keep Archery FUN and not get to wrapped up in the tourney side of shooting.