Opening the big spear is different, but I think I"m so used to those Case Barlows (secondary pen nick on pile side almost all the time) that it never was a problem for me.
My EDC oily creek bone Big Jack had good, but not gator-like, snap out of the box. I will admit I half-expected both springs to be just immense and create finger-chopping snap but as a functional pocketknife it is more than fine. Doesn't suffer from the complaint some of the 35s prompted about the snap not "kicking in" until the angle of the blade was very small already...my oily creek 54 closes basically right after the half stop on either blade.
I have found that having a big clip and spear on the same knife (like the 54 or the new Maher & Grosh Yankee Whittler) tends to limit my choices in the smaller knife I generally carry in the watch pocket. Thankfully I've always got my EO sheepsfoot 25 if I need a good little cutter that vanishes in the jeans.