Laowa 7.5mm f/2 in ETC Mode, Lumix GH5

Hi Jon, I appreciate your work on your blog and enjoyed the info on the 7.5mm Laowa, I wonder if I could ask a few questions regarding this Lens and in addition to the purchase of gear in Vietnam? as I am travelling in the region in the next few weeks? I have seen this lens available in ho chi minh city at ngoccamera and wondered if you had any experience of these suppliers?

I understand if you want to reply by email rather than here?
Thanks for the blog.

regards
Matt