I use this Boker on Saturdays after I've cut my hair. It takes about thirty minutes for me to do it right. During the week I use the DE's, much faster.
This is the one I'd like to have.
841st Eng (Cbt/Hvy) 81ARCOM, 84th Eng (Cbt/Hvy) 2ACR, 40th Eng (Mech) 1AD, 588th Eng (Mech) 4ID