[TowerTalk] can I sub a Hytower for a 40m vertical in a phased array?

[WW3S]

I currently have a 2 element 40m phased array, Christman fed, using 2 modified Butternuts as elements....I recently aquired a Hygain Hytower, but due to small lot size, am running out of space.....I was thinking of using the Hytower in place of one of the current 40m verticals, and using it both as part of the array, and also freestanding on 80m......any thoughts/ideas/suggestions? 

73, Jamie WW3S