DesignJet, Large Format Printers & Digital Press

I just started a new job as IT Director. Previously, I had been both IT Dir and Graphics Design Mgr, doing both graphics design, prepress, and all things IT.

At my new job, we have a brand new HP Designjet T1700DR. Current staff is not familiar with it and have only made a few poster prints. this device in particular is new to me.

Two Easy (hopefully) questions:

1. The are wondering how we can output more permanent outdoor signs. I see that there's Tyvek substrates (media) available, and supposedly there are UV inksets. Can anyone advise me on how we can output more durable outdoor signs (Current inks are getting slowly eroded off (rain) of the media we use today (not Tyvek).  If the inks aren't outdoor durable, are there sprays you recommend for the outputs that may help make them more permanent? We live in Buffalo. Rain in spring/summer. Snow in winter. Some sun though not enough!) 🙂  We print and then put the output on those foldable (collapsable) sign holders and stick them on our lawn and parking lot entrances. Also on outdoor windows/walls.

2. Can we print on Canvas & Fabrics? are there supported canvas stocks? Again, new to this, but I'm looking for sources for canvas and other fabric types that we can print on. (We are a church and our current graphics designer is an interior designer. She wants to be able to print canvas prints, but also on fabrics to hang from the ceiling. Looking to understand what is officially supported and sources for media (substrates).

Sorry for the n00b questions. But i'd really appreciate you all sharing your knowledge and help (SKUs, part nos, vendors) for what we need.