Good finds - I actually thought pair #2 looked more Alden-like, but they both look like good boots. I'll have to check out Marks and Sparks next time I'm passing.
You didn't hapen to spot any close-enough Indy trousers when you were there, by any chance?
Agree with you that the 2nd pair look more like Alden's. I went for the first pair on the basis that they were Indy-esque, and not as an Alden replacement per se.
Not sure whether these boots can be re-soled, but I don't see why not.
As to 'Arizona' Smith... I came up with the name many years ago when I made a short Indy spoof (on video), which included a two-car version of the truck chase, with stunts.