How is MNX Triton, a public cloud offering, an alternative to an on-prem, private cloud solution?

I'm sure that SmartOS is great, but being based on Illumos, I'd be hesitant to switch. Illumos doesn't have the most expansive community or hardware support as far as I know.

How does it compare to Proxmox, if you don't mind? Both seem to have distributed VM and storage and VM/CT support, software network support... if Triton has better SDN I may be interested in it.

I remember taking a quick hobbyist look at JoyentOS or something like that about five years ago, but I thought the project died... I'm shocked to hear it's still alive.