Queen walk used for clean-up

Queen walk usually happens at the start of an attack. I was wondering if anyone had tried using this tactic for clean-up since the extra 30 seconds got added? The basic tactic would be using GOWIPE to the core with bk. Then dropping the AQ and healers to walk around the outside of the base. In this way she should rarely be in range of multiple point defences.

I tried it today in war against a somewhat premie th11 in war. GOWIPE fizzled out at 52% and it was going very well until AQ AI screwed me over. She just had to walk up and stand right next to a tesla so she could shoot a gold storage lol. End result was 89%. I only used 2 healers which is perhaps not enough. Anyone had success with a similar tactic?