EMU Boots - any experience?

[BelleEtoile]

Has anyone any experience of EMU boots? Would you recommend them?
I am looking for waterproof boots (both ankle and knee length) that I could comfortably wear to work and have come across these.
They fit the brief but I am unsure of the quality and longevity.

I forgot to add a link
www.emuaustralia.com/uk?changeSite=true&xdefault=0.58267336749909441570268751539

I would be open to other options too.
I'm looking for black boots that can be worn with jeans or dresses in a smart casual office environment