Mombasa has three tent models available:
Expedition - is a two person model
Adventure - is a three person model
Overland - is a two person with a covered/enclosed enter model
Then they have two fabrics available, urethane coated polyester and a poly/cotton blend.
Expedition - available in both fabrics
Adventure - only poly/cotton
Overland - only poly/cotton
In the more humid conditions of TX, you would find the improved breathability of the poly/cotton fabric a benefit. So for I've have my poly/cotton in rainy conditions a few times and it's works the same as the urethane coat fabric in keeping the rain out. Need to get my poly/cotton out for some colder camping to see how well it controls condensation in those conditions.
Compactcampingconcepts, racktents, trdparts4u and cartopcampers are all selling Mombasa RTTs.
Campinglab RTTs are very similar but not identical to Mombasa RTTs. If I understand it correctly, Campinglab imports their RTTs from a trading company which gets their RTTs from the same factory that makes Mombasa's RTTs. But because Mombasa has North America import agreements with the factory, the RTTs the factory sells to the trading company will have different specs.