Here is something on this topic that I posted on another forum:
I used to regularly ride with my normal tactical boots . . . but before doing my recent 8,200 miler, I decided it was time to give motorcycle boots a try . . . so I went to my local Cyclegear and tried on some Bilt Boots . . . I know Bilt doesn't have the best reputation for quality . . . and I was a little skeptical at first, but I bought them on sale . . . with a coupon . . . so I gave them a try.
They were a little tight on my EEEE's but I wore them for two days before riding with them to stretch and break them in . . . Before going on my long ride I did a couple of day rides . . . and I liked them. My only complaint is that the Velcro for the front flap doesn't come around far enough to fully grab once the 'ol EEEE's are in there . . . But a 4" piece of velcro strapping fixes that . . .
They are advertised as waterproof . . . and again I was skeptical about that . . . But on my ride, I rode through some horrendous rains . . . and was in full rain gear for at least 4 days and over 2,000 miles . . . my feet were always bone dry . . . I just wore them on Saturday for a rainy 200 miler for a teddy bear run . . .again bone dry . . .
They grip the road very well and are quite comfy for a walk about . . . During my 19 day ride, they were the only footwear I wore for the entire time . . . again no complaints . . . They also have the bonus of motorcycle specific protections . . .
So I am sold on motorcycle specific boots. These have over 9,000 miles under them - for the money they can't be beat!
Like Ponch, I use Mink Oil on anything leather and put it on these and will treat them with it once or twice a year . . . In addition to the regular Mink Oil treatments, before going on a week plus ride where the weather is uncertain, I lay all my gear out on the deck and spray it with Camp Dry spray . . .
All things considered though, have you contacted AlpineStars about this? from your summation, it sounds like the sole/boot seal isn't up to par . . .