Canon R7 and R8 as B/C Cams for Long Form Event Video?

[BlueBomberTurbo]

Been looking at ditching my m4/3 cameras (OM-1, GH5) for something better in terms of IQ and AF.   They've been reliable in terms of not overheating or losing files (same as my Sonys), but the quality is meh at best.  OM-1 worked well enough for handheld stuff in terms of AF and IBIS, but the quality from the camera is the worst out of my lineup (A7 III, A6600, OM-1, GH5, R50V).  Poor excuse for Log, digital patterning in the noise structure.  GH5 is just noisy once you start cranking the ISO, and at least 50% of the events I shoot are in low light.

Wondering if the R7 and R8 were reliable, as I've read about issues of overheating around launch (like many Canons), but not much news afterward.  Plus, there are now plenty of fans out there to add on back, which should solve the problem in everything except maybe summer sun.  And yes, I know the R8 is crippled with a 2hr time limit like my R50V.  I rarely need more than 2hrs, but I can (most likely) trigger a restart with an intervalometer like I do with my A7 III.