Yeah, esssentially you've walked in to a Manchester United bar and asked if anyone here fancies Liverpool
Official rules are more widelyused - I'd say 65/35.
And these are the typical differences:
Coreheim:+Balance
+Streamlined
+Multiple builds for each warband
+Clearly written rules
-Fewer warbands
-Less luck & randomness (which many players enjoy)
-Fewer pieces of special equipment
-"Soul of the game"