In-Memory Bundle Patch rollback all the ETCC required "overlay patches"

Hello folks,

     I originally had DB PSU (26713565) + OJVM (26635845), and on top of that i applied "overlay patches" (per Doc 1147107.1) to satsified all the ETCC requirement. Everything was fine and dandy up to this point. Then i had to applied IN-MEMORY Budle patch (26635880, to be percise 26717470 under 26635880) to prepare my instance for upcoming project, in which we will acquired licenses for in-memory database.

    Well, the only slight problem i had was, that in-memory bundle patch rollback DB PSU (26713565) and all the overlay patches (ETCC required). So i'm at the split where should i stick with In-memory bundle patch or stay with DB PSU+ETCC overlay patches? Thanks in advance.