Our field is a very rough grass field with neat things like animal holes dug all over the place to drop a wheel into.
I have not yet seen an Elan at our field but the intro and XL Boomers get a lot of flights in.
The only times that the gear have problems is if you land right on a hole fairly hard. As long as you land gently, even the holes are not a big problem. With stock wire gear you have to bend them back after a few landings.
From what I have seen at our field, most scale ships do not handle the grass well without structural problems.