In the elaeagnus family, the umbellata (autumn olive) has excellent berries, small, similar in taste to sour cherries. Try and get some of the named cultivars because their berries are somewhat larger and very easy to pick.
Here's a comparison of sizes:
https://www.flickr.com/photos/frutticetum/10834840665/ and here you can see some photos of a fully laden bush:
http://mobile.gartlc.mojforum.si/gartlc-about2093-0-asc-30.html .
We're using these to provide berries, shade, windbreak and to break up compressed clayey soil in a difficult location (drought and wind). They are great. I just moved a bush to make room for a plum tree and the soil around its roots is in a much better condition than when it was planted. They are drought tolerant but I do mulch with grass clipping around them to make their life easier and to give the earthworms something to do.
Rovada, which you mention, is a really good cultivar of red currant, I'm sure you'll be happy with it.
As to mulching in a meadow, check your vole population... If you have plenty of voles, you're likely to have even more under the mulch, so proceed carefully, use netting around young trees etc...