As to a weak detent, thankfully neither of mine were/are like that, although if it did, I'd rather have it tip-up to be against the front pocket seam, unless you're carrying it in your back pocket.
After reading your and Reeek's comments I started wondering if I got a bad one. I re-watched Allen's vids on youtube and did some further looking. If I followed all this correctly the detent is made by the release button moving into the cutout on the back side of the blade as the knife is closed. On mine you can see the release button move slightly as it contacts the cutout. So I assume all is normal.
I briefly considered taking it apart and examining things, but I'm pretty much tool-challenged, plus Allen makes it pretty clear that the tolerances are so tight you really don't want to do that outside the factory.
I guess strong and weak detent is a bit subjective.
And apparently not a great concern to many folks. It is something I tend to notice, being a basic believer that Murphy was an optimist.
It's certainly not the most detent of any knife I own like Reeek mentioned (but then I don't know what Reeek has

)....certainly not as strong as the Spyderco Police3 I just got. It does take a VERY positive wrist movement, or a pretty sharp whack, to get it out of detent, which I guess is about right and probably satisfactory.
Tip up would work as long as it's against the front of the pocket, but I was thinking most folks carried to the rear of the pocket.
Could be an interesting general question to poll sometime.
The G-10 version is very well made (Both are), but I found the balance on the aluminum ones to be better, just IMHO.
I haven't handled the aluminium, but I think your opinion is probably correct.
There may be some difference in balance between the Tanto and the other.
I think one notices the blade weight only the first couple of times they hande it because it is a bit different than the norm. I realized after handling it a few times I wasn't even aware of the blade weight anymore.