if you stain the crap out of them they can work but acu really sucks in about anything other than a gravel pit. get em really muddy wash cold without soap.
As far as ACU's go.
One of the snipers in my Battalions sniper section used ACU's as a base. Even made it through sniper school with them. However he used ALOT of spray paint and with the skid pads on the front and the jute on the back there wasn't a whole lot of ACU fabric visible.
he recommended not using them as a base but if your being budget minded they 'can' work. but you have to work harder at it.
YMMV, I used a set of Multicams. less because of the pattern and more because they are treated to be somewhat bug resistant and are also fire resistant. Ghillie suits are huge fire traps.
Rob
And because this is a show me thread...
You can see where I used hair bands as tie in's for natural veg. Not sure if this will work, will find out this weekend and correct if it is apparent that it wont work well. Also need to add some more light jute, got a little darker than I intended when I was spraying it with rattle cans.
I went with suspenders on the pants, I also have a belt but I didnt have it on there for the picture. The button you can see on the belt line is for an elastic tie in on the jacket, to keep it from riding up, maybe.
You can see the skid pads on the arms, underneath the canvas is a section of sleeping pad foam to act as a cushion.
I put the foam on the legs, knee's and also on the chest to hopefully make it as comfortable as possible. Maybe it will work.
You can also see my boonie cover, the veil is about arms length to act as a cover for the rifle in the FFP, I might add some more jute there too, looks a little sparse.
I went with the suggestion to add jute everything fist width, here it looks a little lacking, so we shall see.
Edited to add some knowledge...
Ok, So Ive now used the suit, and it works for the most part. I also know what I will do for the next one, if I ever make another that is.
1, should have vented the back panel, damn thing is hot.
2, should have used a larger size, with a camelbak under the top its a bit tight, which makes it hotter.
3, should have vented the back panel, the damn thing is really fricken hot.
4, should have added netting on the top part of the chest, not a huge deal but would be nice.
5, cut the foam padding to make it more flexible, maybe not use any padding on chest area, this increases heat retention. Did I mention how hot it was?
6, the buttons on the trousers to attach to the top, worthless, pulled out on the first stalk.
7, suspenders? good idea.
8, using hair ties as veg tie in's? works ok but only if you cut the hair tie, trying to wrap the loop around the veg is an exercise in frustration. honestly, regular 550 cord works just as well.
9, maybe would be easier to take on and off if I had turned the top into a side zip and gone with a full coverage front. would be alot easier to take off to re-veg during a stalk as well as aiding in ventilation. I think I have conveyed how hot it gets.