After quite a few weeks delay, my first pair of Nick's arrived yesterday. These boots are amazing! I own several pairs of White's, Wesco, and Red Wing. The leather and build quality on the Nick's is probably the best of any of them. The leather is Tan Teton, and it is the thickest, stiffest leather I have ever owned in a pair of footwear. Normally I can have a pair of new boots broken in and comfortable in a few days. These boots from Nick's are going to take weeks, I can already tell. The welt stitching on the soles is the most precise of any boots I own.
For a size comparison, they seem to run about 1 width wider and almost a 1/2 size longer than White's and Wesco. A 9 1/2 D in White's and Wesco fit me with a medium-weight sock. I can easily fit the heaviest wool socks I can find in the 9 1/2 D Nick's.
Tan Teton uppers, tan lining, and Vibram Lug sole. I did not specify a different tongue color, but it is a softer leather than the Tan Teton. Personally I love the look, and a tongue made from Tan Teton would be almost impossible to fold over to lace up the boots. They are the McKay construction, not the welted construction. It is similar to what Wesco uses. I can't really notice any difference in function between the various welting methods used on these types of work boots.
Here they are new in the box:
Fresh from the box: