Thanks @Jay Hinrichs @Tanner Thoman and @Sean Reilly.I think it probably falls into the "it can't hurt to get it" bucket for my particular situation.  

We end up eating the cost of things like nails, putty, caulk, buckets, paint pans, rollers, putty knives, trowels ect due to waste and the tools ect walking off with the contractors.  

In the grand scheme of things, it was a drop in the bucket.  

I purchased the paint for another job had $150 in the 2 5gallon buckets of behr ultra, $46 in ceiling paint, 2 shower valves at $55 each, drywall at $64, insulation $60, plumbing fittings at $23, tile was $100, $60 in door knobs, I payed my employees for cleaning all 4 units out, painting 1 apartment and half other, tearing out paneling and insulation, re install new insulation and hang and finish drywall, install 2 shutoff valves and install scald proof valve.

I had no idea that 'holding a Koala bear' was on my wife's bucket list so the trip was invaluable.

I bought an occupied REO a while back  with a squatter where the house was full of human waste, mostly in buckets.  

Nice to have a large bucket on hand if it starts raining a bit ;)

Tile buckling, counter tops with gaps, buckets full of water from unknown leaks, home made plumbing, etc.

(A bucket list item...) and now at Cuyahoga Valley National Park here in Ohio.  

My solution, generally, has been to keep the account very separate and create criteria buckets for certain deal types, both from risk and cash flow perspective.