It is true that static images are fine with the shutterless adapters. My Q shooting style is hand held with long lenses my 135, or my 55-300 zoom. What I found is that my camera (hand) shake will create distortion when using the rolling shutter and that distortion is gone when I hand hold with the Pentax adapter. So what I am saying is that shooting static subjects using a tripod is fine with shutterless adapters but introduce subject or camera motion and you will need a shutter.
The following image was shot with a SMC-M 135mm f3.5 lens hand held on a Q with a Pentax adapter at 1/800 sec. shutter speed
This image was shot with a Q and the same 135mm lens using a Fotodiox shutterless adapter at 1/2000 sec. shutter speed, look at the tail front and rear edges they are not straight also the bottom of the airframe is not straight and the propeller
This same distortion is present on all images shot without a shutter but may not be as easy to see, for me the overall image using the Pentax adapter is sharper. I am not saying that I didn't do a better job focusing the upper image, I did but poor focus will not bend straight lines. Same camera, same lens, same aircraft only the adapter has changed (and operator focus) different year