What kind of "Hub" is required for the radiora2 devices, that myServer can see? myServer can see and recognize each individual button on those, right?
A RadioRa Master Repeater is needed. Yes, individual buttons
What about plug-in modules like for lamps? If I get Zwave modules for those, will a button on the lutron keypad be able to control those (I know not directly, but through myServer rules/routines?)
yes, myServer will see the lutron keybutton push and would use that as an automation event to trigger a Z-Wave command you configure.
Finally, I'm fairly savvy when it comes to this stuff- If I take the online training, should I be able to program those myself?
There is no online training. Best is to use the UI and macros Allonis has programmed and reverse engineer how things go together.
Now that Insteon/Smartlabs is basically gone for good (which they did in the most horrible of ways), once my serial PLM dies, I'm going to have a seriously deprecated system. Sure, all the lights will still work, but as for ISY/Allonis integration, it's all gonna be gone. There are serial PLMs on ebay going for well over $600, now. You can see the desperation people are in, now, knowing that someday, their entire, quite expensive, Insteon system is going to become completely worthless, and there is nothing that can be done about it.
You shouldn't need the smarthome cloud at all. The PLM is locally controlled via ISY and the ISY is locally controlled by myServer.
They have a 6 or 7 button one available. That's probably what I'll have to go for, when the time comes. Time to start saving up for when my PLM dies. (which, it will)
Replace with Ra2 when you can.
But, keep in mind, Allonis is only supporting myServer 6 for the last few years. And only for commercial projects. We are soon going to launch the SmartRemote handheld remote control w/ touchscreen that will trigger getting back into residential for myServer 6. We offer configuration services as we do for all commercial projects today.