I've flown the other privateair on SVG-IAH with the all business config. The product is not comparable to wide-body business and you primarily opt for the convenience of the flight. Either due to route or timing.

The service concept is similar, I slept fine (with sleeping aid), didn't bother with IFE as I've learned to bring my own entertainment on SK flights.

Stepping out of a 737 on the other side of the Atlantic continues to be a weird feel. Especially if you connect onto something bigger, such as the various 757, 767 and 777 planes that US carriers fly domestic. Strange experience flying HNL-IAH-SVG, going from 777 to 737.