Hi! I am from Hungary. I am a member of a youth community that is based on a local Catholic parish. This community consists of about 30 people and we have our band for music service. I play keyboards and percussion. Apart from my Juno-G I use only a Yamaha home keyboard (PSR-225GM) mostly for MIDI control that was already in use in the community when I joined.
Because we don't play for much people, we go pretty much unplugged. We don't have a drummer, I play a pair of bongos, a tambourine and triangle, when I have free hands. Our whole music is mostly based on acoustic guitars, with flute, oboe, violin, recorder parts. These all sound without amplification. The Juno goes on a small amp.
The Hungarian songs we play are similar to the ones you mentioned, only without the "stadium rock" feel that is in Tomlin and Brewster videos I've just watched. I can give you Youtube links if you like, but it's not us playing.
On the Juno I use mostly acoustic sounds like pianos, strings, additional oboe and violin parts. Also organs, pads etc. I play all the bass too, there is no bassist. Sometimes I over-arranged myself so I also trigger percussion sounds from the keyboard when I don't have enough hands :)
Sorry for writing so much. Any questions? :)