I've been doing almost exactly this for years - a perfect way of playing a game with the "correct" models until I've finished painting them.
What you do is this:
1) Get your front and back images aligned in photoshop or a similar image editor. They should be arranged side-by-side in a "butterfly wing" style, and there should be a thin line dividing the two images where you will fold. make sure these is some free space around each image on each side of the line.
2) Print it out in colour on normal white paper. Fold along the line, and with a little glue, stick the halves together.
3) Cut out the standee.
4) Laminate the standee.
5) Cut out the laminate.
6) Attach the laminated standee to the base of your choice. Done!
A laminator can be bought on Amazon for about £10, and a stack of credit card sized pouched is only a few of pounds more.
This allows "models" to be very durable, very cheap, very transportable, and you can mark on them with a dry-wipe marker pen if you wish (for tracking wounds, effects, etc).
Aside from saving your the modest inconvenience of making your own, the only real advantage of this KS is that you don't need to look for images of the models you want.