I like these card. I fill them in in PDF, print them out, and allow a fold over section so I can include a picture of the character. Then they can hang over the DM screen, picture outwards, to show marching order, while I have all the info in front of me.
But... There is not enough space in the form-fillable section of AC to give an AC with/without shield, or with/without Mage Armour, etc. A little more space would be good. Same for the ability stats. A space for the score AND the modifier would be handier. Easy enough to fix if I print them out and fill them in by hand instead. :)