The problem with "cheap" POE switches is they have the potential to create weird problems down the road. If for price you need to go that direction, I get it. If your going to have a service contract with the customer, I think you should not use these "cheap" switches. I have been down this road before, and I never use the "cheap" switches, what the client will save as opposed to problems and costs to resolve stuff, just makes no sense IMHO.
By the way, I am not commenting on your switch, never used it so have no experience on it. I am just saying as a blanket statement about "cheap" POE switches.