Halion Sonic 3 and Mainstage?

Checked for this in the forum and did not find anything. Is somebody using Sonic 3 as virtual instrument in Mainstage? Of course it works, but on average I got 400 MB for each patch - my gig is around 40 songs so the concert becomes unusable. Tried to set the plugin in a strip at concert level but the instrument/multi in Sonic apparently cannot be changed at patch level. Also tried to paste alias and this only works if you need exactly the same sound twice. Any suggestion?