Keith, I dry hop American styles in a keg all the time in a 5 gallon paint strainer bag. No clogs, works perfectly fine. I just like to trap the hop aromas in the keg. But I use buckets, so I don't closed transfer from the fermenter to the keg. With that setup, it gives me what I'm after - good hop aromas that don't get oxidized on the way to the keg.