It's accredited, so it might meet your needs, depending on where you want to do with the degrees. Perhaps you could test drive a course, and see if you get out if it what you want. On the other hand, there might be distance learning programs from institutions in your state where the cost-benefit ratio might be better. And perhaps you should talk to some of the PhD programs around to see if they'd see a masters from that institution as a barrier to admission to the doctoral program.
I can't justify the time or the money at this point in my life (and another degree wouldn't be much of a professional boost), but I can see getting more formal education when my family reaches another stage.
And, perhaps if we continue this discussion a while, someone might show up that could actually give you some useful information.
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Since you mention Sam Houston, my wife took a course there the semester that we got married. Since she was going through a lay-off, a marriage, and a move of several hundred miles that spring, she otherwise would have missed a whole semester. And, now that I think of it, that course was in history.
Huntsville is where several state prisons are located, and I think they got into distance education to serve the prison population. Sam Houston is a solid second tier state university.