Trying to understand the value of the new GI-275 as a better emergency backup than my current setup. Right now, I have G500, GTN750, GTN650 with a Mid-America battery/electric backup AI. If I replace the Mid-America with the GI-275, do I gain any functionality? specifically, can I use the GI-275 as a backup MFD, CDI, etc - but in the event of a complete electrical failure, it would revert to just AI duty on its emergency backup battery? Same question with regards to replacing a GI-106B CDI. I have one wired to my GTN650 that acts as a backup to my G500...if I replace it with a GI275, do I get all the fancy features with just the GTN650 feeding it, so in essence it's like having a mini G500 as a backup?