I'd be concerned he would shed votes from the West, the question is would his gains in the East make up for that?
CPC could safely shed many votes out west without impacting their seat count, especially if those votes are shed from the right edge where there is no viable contender to pick them up.
I'd be ok with a Charest CPC in government, with a PPC to the CPC like the NDP is to the LPC.
Difference being the NDP don’t need to go to IKEA in order to pick up seats.