I know a hand full of pros (mechanics),, they don't rely on financing gimmicks to purchase their tools.
As I am a general contractor (for 28 years), I don't rely on financing gimmicks from my subs. In other words not going to hire a roofer who jacks the price up 300%, then offers "get 1/2 the roof free"
No one supplier can supply the tools and equipment I need. I regularly purchase from over 20 suppliers/vendors,, I am not going to buy just what ever the "door-to-door" salesman has.
Until HF gets tool trucks and offers financing, I doubt you will see many pros use them, but their market may be more the DIYer who wants to look like a pro.