While I don't have a lot of experience with either NV or thermal, I have got to think that for more stationary hunting a good thermal would be the clear choice.
With just a Patrol you could do your scanning and then, using the currently available Wilcox QD mount or one of the forthcoming QD mounts, you could weapon mount it for shooting. It has about 1.4 or so native magnification, and digital zoom up to 4x is useable. Alternatively, it can be used as a clip on and QD mounted in front of a day scope, in which case you would rely on the day scope's magnification. I haven't tried that with my Patrol, but videos on line from the Patrol and similar 640 thermal clip ons indicates that the image holds together pretty well through maybe 5x or so, if your day scope is good.
Nothing warm blooded hides from thermal. No IR light needed no matter how dark the night, so no splashback and never any smoke from the rifle obscuring the target, which happens at times with NV without any IR and more often when an IR light is used. Thermal will see through fog, though in high humidity performance is reduced. Even in high humidity though, the target or potential target stands out.
From what I know now, if I had to chose one device for night hunting, it would be a thermal I could use for both scanning and for weapon mounting, even if the mount was a throw lever type. I would block off that portion of the Picatinny where the mount doesn't go so I could find the correct position on the receiver by feel and with the slots blocked, would have a hard time mounting in the wrong position.
FWIW,
JPK