I admit I'm piggybacking here and I'll start a new feature request if necessary though I do think what I'm asking is an extension of this.
I would like a way - assuming it doesn't already exist - to filter file ingest to secondary destination. Specifically, I'd like to never ingest jpg to secondary and only my raw files. On the road I'd rather not use space of USB-SSD and at home office they are only going to a backup on the LAN just in case. (I don't have a mirror to my LAN though I should.) And when the LAN mirrors to offsite, I don't want to pay for jpg space.
Along the lines of this request, I'd like to be able to RAW into one folder and JPG to a different folder on primary destination and then only RAW into second destination.
Appreciate the work you put in.