AFAIK the Velum jacket is a regular production line which is widely available, whereas many of the Berghaus Proshell jackets sold by Sportpuruit are made just for that purpose. I don't know if that makes any difference to their quality, but I suppose it might.
A few weeks ago a couple of OM members kindly sent some trousers to me for use by one of my son's friends when we go walking on the hills. I'm happy to say one pair got their first use by him when we went for a ramble over the Crinkle Crags and Bowfell on Saturday, and they proved their worth on what was a beautiful but quite cool day.
The two of them had a great time, climbing on most of the boulders and slabs along the way and doing what my son called "hardcore parcour" — leaping from rock to rock whenever we stopped for a "rest".
So thanks agin to the donors, and others who offered advice on the same thread.