I’ve got a Pompetamine Versa 8, and it is indeed a heavy thing, I suspect mostly because of the concentrated weight of the rear hub. If the weather is nice, I would of course much rather be riding my light road bike.
However, if the weather is crap (as indeed it mostly has been this summer), then it’s a zero maintenance bike (hose off and lube the chain). I use it as a summer “bridleway” bike, and a bad weather road bike. It’s pretty good fun on the twisty bits with the cross tyres it has fitted.