To a certain degree I think yer comparin' an apple and an orange on this one. To the Chinooks favor, it's hell bent bent balls out tough, period. It has a nice blade shape, and generally speaking, I do trust lockbacks more so than liner locks. To it's disfavor...it's thick, heavy as hell, tip down, and I have a distrust in the CPM 440V steel that's been used on them. In the past I've found that stuff to be way the hell too brittle. The Chinook II however, will be revising most of my complaints (I'm gettin' me one of them!

) It'll be tip up, tip down, and even Southpaw switchable. They're changing the blade design, and lightening it as well. Also switching to S30V as opposed to the 440V stuff. (I've got no experience with the S30V stuff, but I'm eager to try it)
The Almar SERE is well...heavier than it looks, but definitely lighter than the Chinook, altogether a very acceptable package. It has a thinner blade that just simply cuts like mad. Also has the simple spearpoint that's nice for just all sortsa knock around tasks. Love the VG-10 steel used in 'em. Takes a nice "toothy" edge, and holds it for quite some time. It also rides VERY deeply in the pocket and opens VERY smoothly. Overall a more controllable knife for finite tasks than the Chinook. As to the liner lock issue, in this case, I'd consider it a non-issue. I've had three of the SERE's and all three had the linerlocks done right. You may not be able to hang a half ton Chevy by it or anything, but it will be strongt enough to handle anything us mere sane mortals can throw at it, and then some.
In short, if you like lighter weight, control, and cutting efficiency, I'd go with the SERE. If you want absolute pry bar toughness that you can get away with more abuse on, I'd choose the Chinook.