Is their gear made in USA? There is stated that is "made by OPSgear". When opsgear was popular around here it was all made in far east as far as i can remember.
A couple of days ago i went to a close friend that uses a lot of cordura. On his desk there was a fabric sample book from a chinese supplier whose name is JIAFA or Ronson Tactical.
There were samples of ripstop and 500d cordura in various camouflages, including T-pattern and desert night obviously. Also strichtarn as made by Perroz Design, Brushstroke.....don't know if Spiritus systems is berry complaint, but i think that in the catalogue there was their 80's carpet pattern. Good looking pattern and quality, price is low, many buy from this vendor.
Regarding T-pattern, years ago ROYALTIGER (the chinese shop that sometimes also has made in china overstock of military uniforms) had t pattern bdu cut uniforms that were overstock from Gabon Presidential Guard , they used both the classic colorway as well as a desert colorway. I think pattern was slightly different in size and repeated more often, difficult to distinguish at a glance.
Chinese had without doubt been printing T pattern rolls since forever. But the fact there were desert night ripstop and 500d cordura samples got me thinking.
I think that asking directly to them could be the better choice.