No change actually.. I drive down both skill trees anyway. Pommel strike would take one extra skill point or a wash.
I do find it interesting he didn't include Flow Of Battle in the build.. That skill makes a noticeable difference on the availability of rampage, mighty blow, and one would assume pommel strike too.
EDIT: Here is my skill allotment:
At level 12: http://da-skills.net...000,000,000,000
At level 18: http://da-skills.net...010,110,010,010
Here is my Reaver build progression. Usually I end up as lv10 after playing a Perilous match first. So with that in mind I try to get the best value out of my points. And after lv10 I have no desire to re-spec because there is just no point...
lv10: http://da-skills.net...000,000,000,000
lv16: http://da-skills.net...010,010,000,000
lv19: http://da-skills.net...010,010,010,110
This is probably not the "best" build progression but it gives me pretty good value for my points at early stage. Pretty much everything is in place right after lv10. I take rampage as most people because, hell, so much easier to play that way... In Bruh's defence, as he don't take rampage to utilise damage bonus as low health, he don't need to grab flow of battle to reduce his rampage CD because the whole point of the build is to max out your damage with dragon rage, and if you are spamming pommel/MB then well you are not making good use of your low health. These 2 skills are there to mostly deal with shield guys so you can dragon rage better.
And yes, if you don't have PI I would certainly swap MB for upgraded combat roll.
If you have tons of Con then I would suggest to forget about rampage and just rely on Heal on kill. There is no real need for rampage if you don't need the health. Devour serves you just as good until you have enough skill points to go right to the bottom of the right tree,