>>3814953If you can afford it, get the Pentax without selling the Mamiya. You can use the Mamiya for studio, strobes, etc. as you said, and the Pentax for everything else. If you find out like after a year you barely touched the Mamiya, you sell it.
With most SLRs you can get tight head crops with even a short tele, something like 150mm-180mm. Even closer with a macro. So portraits and people will be no issue at all no matter how tight you wanna focus. Unless you want a very tight shot with a normal/wide lens. But that's rare outside of macro.
But I get what you mean. Those system cameras are so extensible and versatile, people barely use all their functionalities. Sometimes you just need something practical and ergonomic even if it lacks some "features".
I like prisms too, I find them easier to focus and frame in any light. Plus you can get metering or even aperture priority with them, which is convenient. I rarely use a WLF anymore.