In reply to jonnie3430:
Ok had a play with the Apexes in a shop today.
To confirm, the pick and hammer/adze is single piece and not modular like the Viper.
Compared to Viper they are pretty much the same overall weight but feel really different - whilst the Viper is a lot more top heavy and seems to "turn" more, the Apex has much more weight in the lower shaft/handle, even with the pick weights.
Curve wise, line up the two handles and the Apex pick tip is about an inch lower than on the Viper.
You can tell I've had a productive afternoon :P