So easy to grow that it will take over, I would avoid it like the plague:-)

Don't touch it with a bargepole Nellie.

Yes, been trying to kill it off in the hedgerow here for 20 years as it suckers all over the place on the inside.
Symphoricarpus is its name b the way.

Avoid is my advice too - for the odd china white berry you get, it's not worth fighting its inevitable spread, if the person means Symphoricarpos.

There is, though, another shrub called Gaultheria (sometimes Pernettya) procumbens and one variety has chunky white berries - its a shrub, common name prickly heath, usually sold with berries present, but you need a male and female plant if you want berries in other years, and it must have acid soil. Pictures and info here

http://www.nodiggardener.co.uk/2012/12/pernettya-harem-acid-truth.html