I remember that day well, with my 'Safe Standing Roadshow' at the Local Hero. All of 12 years ago!! (See pic)
Great to now see the club moving ahead with this and going to such lengths to get supporters' views before making their final decisions on location and rail seats and/or barriers.
While still a campaigner at heart, and happy to answer any general questions here on safe standing, I must also declare an interest, in that I do now act as a freelance agent for one of the potential suppliers (including of the all-steel rail seats).
The question posed about why would the club provide safe standing infrastructure for the away fans was correctly answered: for the stadium to be approved for 'licensed standing' provision for safe standing has to be made not only for home fans, but also for at least some away fans. There is no hard and fast rule about how big the away fans' area should be. Some clubs are advised to do 10% of the away area capacity, others are being told that the percentage of the away area done should mirror the percentage for home fans (so, if the home standing area represents, say, 15% of the home capacity, the away standing area should be 15% of the away capacity). But in any case, it is indeed a requirement to do some standing for away fans in order to get the ground licensed for standing. (Though the way it's done in the two areas doesn't have to be the same.)
As someone has already mentioned, the big difference between the flat, steel rail seats and the various models with plastic seat bottoms and backs is the space provided by the former. And the lack of any curling seat backs to scrape your shins, or protruding seat brackets to bruise your calves!
If you haven't done so already, I'd encourage you to go along and take a look for yourself. It does seem that the club genuinely wants to hear you views.