My Sunspel long-sleeved polo arrived today and I couldn't be happier with it. The material is definitely different from pique and the material appears sheer at first glance but it actually sits very well. I can understand how some people would don't like the feel of this though. I've got a Kent Wang rugby on the way and I expect that the material will be different on that one.
Anyway, I'm happy with this and I actually have it on now.