Never tried it so I'll start by saying I'm a bit biased towards DC/lower volume style training where maximizing strength in the given rep range is the focus.
But regardless of that, my two cents: I like including some "density" type work at the end of a session where I'm just trying to accumulate volume in a short period of time while not affecting my main lifts. The Gironda 8x8 approach may be beneficial towards cutting as it's probably gonna boost the calorie expenditure of your sessions and improve CV fitness. Although it wouldn't be MY preferred method of training (as the saying goes, I think what built your muscle is what's gonna keep it) - so long as you're progressing week-to-week (or at least maintaining, idk what your training age or natty status is) within the 8x8 approach I don't see much harm. Worth a shot at least to see how you respond but I'd personally be hesitant to keep it going if you notice a significant performance decrement after the initial adjustment period as I think preventing a drop in strength is one of the key variables in maintaining muscle in a deficit. Worst case scenario imo you find it's not for you and you got to try some new style of training for a change of pace
