It may not be in the official HCL for ESXi simply because it hasn't gone through testing. If you have the equipment I would just install. Use the HP version download from the HP website.
I don't have the equipment, I'm looking for buying it, but I want to be sure it will work before.
Another thing that I see in the forums is that a BBWC is needed for optimum performance with P410 controller, but I don't know if this is always or only if you arrange disk in array configuration.
BBWC is an always. I would talk to HP and see if they support ESXi on the machine.