Like I said, my comments were things we considered and they may or may not be deciding factors for others. However, I am glad that you appreciated them anyway
I will have to dig up what screen we ended up using, as it was a while ago. It has Windows CE (5 I think) based which I had and have reservations with. Developement was a bit of a pain, but I was pleased and surprised at the stability of the O/S ... not one crash... now that I say this it will now ... We decided upon spinning our own hardware that was installed between the screen the FX-60. There were several reasons for this with the two biggest ones being that we had little confidence in the industrial robustness of the LCD serial interfaces (i.e lack of over-voltage, surge, etc protection, etc) and the non industry standard input voltage (12VDC as opposed to 24VAC used all over the place). Secondly, I was uncomfortable embedding the entire project's functionality into the LCD, as I was concerned with Win CE's stability. Since this device was going to be connected to a N2 trunk I did not want to have the LCD being a failure point. So, I kept the LCD's functionality simply as a smart graphics interface that communicated with my hardware that interfaced to the FX. This has several benefits, as I can easily embed multiple protocols (I have on-board Ethernet as well) into my hardware without having to disturb LCD at all (which is mounted to a wall), I have full control of the reliability (I galvanically isolated the LCD and the connection to the FX), and I embedded a robust power supply (with suitable fusing/protection) for the LCD. This approach may not be for everyone, but it is one I felt comfortable doing, as it makes it easy for me to provide long term support to my customer.
In terms of the application... The building is a 3 story 60K sq-ft build that already had each floor's main lighting wired to about 8 zones/floor via contactors. These in turn are connected to some N2 controllers. This was an existing architecture that we were asked to work with. The system is under BMS control (FX-60) already, but the customer, architect, etc. wanted to have a separate interface for security as opposed to doing it via the FX.
The outcome works very well and has a very clean and contemporary feel about it. It is highly intuitive and so training is only a matter of minutes. It has been rock solid and so far no issues or complaints (yeah!). Since the system is completely configurable, we can whatever functionality they wish... we already have over 100 occupancy sensors sprinkled throughout the building (as part of the controls portion) and so we can add smart lighting control features too. We are only limited by one's imagination and the customers budget.