So does anyone have ESP? Epicor Sharepoint Publisher?

If so, do you use it? Do you find it useful if you do use it? Complicated to
use? Learn? Administer?

What are the advantages, what are the drawbacks?

I have no experience with it and I have a customer who is inquiring about it
and was wondering if anyone had any actual experience.

I can take your comments on the air or off the air.

TIA