I haven't carried the M4 yet but apart from the extra weight of a standard Millie, I assume it will carry the same. Honestly, I REALLY like the Hogue 4" G-Mascus a lot. The weight difference of these two knives is insignificant. I put them up together because they compete on a size/weight level but the blades are obviously geared toward slightly different uses, The Hogue carries deeper but the thumb stud cutouts sit in a perfect position for your thumb to grasp while pulling it out of your pocket. It works perfectly.
I prefer the Spyder Hole over any other deployment method but I'm getting used to the thumb studs again, something I haven't really used in a long time being a predominantly Spyderco guy.
I'm becoming partial to stonewashed blade finishes having experienced the Hogues now. I'd love to see an M4 Millie with a stonewashed finish with a standard Mille handle.
I prefer the handle of the Hogue a slight bit more because there is plenty of real estate but not too much either. There is about a 5/8" difference in the two knive's OAL.
I really like the Hogue plunge lock without experiencing its long term effectivess yet. As a righty, it's is the epitome of one handed operation.
Overall, the Hogue FTW by a slight margin. I've been carrying both Hogues exclusively since I got them and actually prefer the 4" a bit more than the 3.5" because of the handle real estate and because the 4" doesn't feel significantly bigger in my pocket when carrying it.
The value added of the Hogue's very thin, polished edges (you can see the sheen on the edge in the pictures and that's 100% factory) and perfect F&F OOTB is a plus. I consider the Hogues a production knife top value for the street price.
So.. I know they are completely different knives... but which do you like more? the Hogue or the Ti millie?