Buddy was trying to sell me on the power probe the other day. And honestly I cant see myself buying it anytime soon. I have made probably a hundred different types of jumpers, leads, and connectors for testing, or supplying power and what have you. I think it could very well lead to more mishaps than time it saves me (if it would at all).
As for the loadpro, if i am understanding the premise correctly, could you not just use an old sealed beam? Thats my test light. If anything else reads power, and it doesnt well then I got high resistance somewhere.
I understand having these pieces of equipment is alot nicer, or maybe a slightly more convenient package. But my equipment was free other than my time. But I dont know everything so maybe one of you can sell me on these pieces, or explain why mine might be poor practice.