If dipping, with any of the commercial products or homemade recipes, be sure to thin it to ensure you don't lose detail. Again, I would suggest using rubbing alcohol to thin the mix down to allow it to flow off of raised surfaces. Losing this detail wasn't an issue for me as I expect that horde as a mass is still pretty impressive looking on the table.
If painting be sure to use thin coats! I know people say this ALL the time, it really is true. Don't glob paint all over any model, and it will look better. With these models this is possibly even more critical as you can lose detail so quickly.
You have to be careful even with drybrushing. If you rub your brush across the model the same as you would on a high relief model you could quite easily put your pigment into crevices that you don't want to have color.
If doing LOTS of models, definitely work in batches. This isn't specific to that company's product, it was just reinforced today how helpful I find this to be.