I'll chip in as well about the 7x9, just in case you're not totally disheartened :-)
One bad point for me, it's like a flaming oven in the sun. You can't lay in bed in a hot morning and you can forget any kind of respite during the day unless you have it open and ventilated :-)
I have a couple here that are used for a specific reason, their convenience and compactness of transport. Length of stay doesn't come into it really, they seem durable and fit for purpose although they are nowhere near a 9x9 with groundsheet and arctic liner. some have alloy poles with black nylon ends. These ends are segmented and will mirror into each other when assembled. Problem is that they want to slide apart and push into the single skin at the end of the ridge instead of the double thickness area. It's a matter of time until it rips IMHO. The plastic ends have a hole in them so tie wraps offer some solution to keeping them together.The other poles have wooden wedge shaped ends, no idea how old they are. The end guy ropes really need bright stringers if a walkway is nearby because if someone trips over and pulls one out, the tent comes down. It's a slow descent but quicker than you can get out :-)
When the sides are pegged out and the walls pulled, it's a good tent. Almost as big as a 9x9, a fraction of the time to erect and strike, nowhere near the storage space or weight required. One bed across the end or camp bed down either side and room to stand and scratch your balls. The doors can be held open as a windbreak for cooking. I gave up with a groundsheet for them but do have a couple of the supermarket doorway mats to roll out.
I use 2 on the Pinky. They roll into one of the pannier bergens each and the poles go into the third one with a large bivvy sheet. Assemble them door to door and a tent length apart. Tie the door guys to the adjacent tent so they form a ridge line for the bivvy sheey, you have a dry open area for huddling over a cold G&T. One side of the bivvy sheet pegs down following the same angle as the tents, the other is held up with some sectional poles. I used them as a back wall with a desert cammo net over the complete lot to give a sand berm effect backdrop.
Thanks Clive for the literature scans of the tent, most appreciated. And thank you also for the rest of you for the anecdotal info about use and applications. Always a pleasure reading such things and reminds me not to wander from HMVF for so long again :-)