My CS MK2 has a custom firmware that should make it bootable without 060 libs when you insert a WB disk. Never tested this though...
They all do this, as far as I know. I routinely booted mine off all sorts of disks that didn't have 060 libraries.... And mine had the last update of the stock firmware; I know, because I flashed it. :-)
Honestly, I'd take the CS-MK2 before the Warp Engine any day.
(Not that the Warp isn't a great card, too... Just that I remember how awesome my CS-MK2 was.)
Sadly the card passed away a year ago or so, and I've yet to send it off for repairs. But that was after over 10 years of dedicated service; with over 7 of those being my primary computer. (From 1994-2001 my A4000/CS-MK2 was the rock-solid computer I used every single day. And up until early 2005 or so when the card failed, the machine still saw semi-regular service.)
Honestly, for $391 US, you'll be lucky if I don't buy that CS-MK2 out from under ya. ;-)