Eppursimuove- The SRP will almost certainly remove any previously-applied glaze (SRP has both chemical cleaners and very mild abrasives). Some glazes might work OK between SRP and Collinite (something like DWG would be a good choice), but I'd wonder about a) the glaze bonding to the SRP, b) the glaze compromising the Collinite's ability to bond/durability, and c) the need for a glaze period since the SPR is mighty "glaze-like" in its own right what with all the stuff it leaves behind.
I'm a big fan of the SRP/Collinite combo, and I've never felt the need to add a glaze to the mix.
