Has any one had any experience with butcher block counter tops in a rental unit? Considering installing them, and curious how “tenant proof” they are

They are not "tenant proof" at all. They require regular maintenance and sealing plus they can be sensitive to moisture and heat. I'd stick with a solid surface like cheap granite or go with a neutral laminate depending on your price point and market comps.  

I put them in one of rental properties about a year ago.  It's holding up well.  I sealed it with a product called Waterlox.  It makes it water/stain resistant.  I like the fact that is can be sanded and refinished if needed.   

I just put them in my current flip, I put a food grade polyurethane on them before install because this eliminated the need to seal them regularly.