The Exact is not only a good match, but it's a snap to install. However, it is IMHO a bit on the "dry" side.
There are so many factors in how a cartridge sounds in a given system, it's hard to characterize its sound without hearing it in different circumstances. Some magnetic carts are particularly picky about how much capacitance they see.
The reason I mention this is that when I heard an Exact on a P7, i would characterize is as detailed but lush. Not etched or bright, and anything but cold or analytical.
I don't at all dispute what you heard, but the shop I heard it a has specialized in UK audio components and and LP playback for decades. They evidently knew how to dial in that Exact and P7 and match it with the downstream cables and components.
In fact, they sound they got from that combo haunted me for weeks.