In reply to Trangia:
I personally use the Velez adventure light smock, for me out of all the jackets i have worn and tested then its the only one that keeps me warmest and driest in harsh Scottish weather all year round.
The biggest problem i have found with using 3 layer goretex or event is that in driving wind and rain, the outer fabric saturates and doesn't allow the jackets to breathe, therefore i tend to get wet inside from sweat not being able to escape. For me the final straw was when my £300 Rab eVent was soaked inside from sweat, i was cold and damp and i hadn't even been working particularly hard.
As a mountain professional, the 2 bits of kit that has made my life the most comfortable on the hills have been my velez light smock and my la spoetiva trango evo s boots!
The velez light isn't perfect, i find the the thinner material needs cleaning and reproofing every 6 to 8 weeks with heavy usage, the arms and body is cut slightly too short, you have to open the side zips to access the hand warming pockets. However the fabric performance, breathability, waterproofing, hood design and kangaroo pocket mean that it performs excellently in horrendous UK weather.
It is a warm jacket but i see this as a positive thing, i generally only wear a base layer underneath it. In the past with hardshells i would stop, change layers throughout the day and would be either too hot or cold, with the velez light i just zip/unzip, roll up/down sleeves and i am fine. At rest stops synthetic belay jacket goes on top.
I have worn the jacket in summer as well as winter, although as mentioned earlier by others this is a jacket that you tend to wear all day. I too consider this jacket as a softshell jacket with waterproof qualities, as long as i regularly clean and proof then it is fantastic. The only slight problem is that the jacket looks out of place walking round town as it is incredibly unfashionable, so it is purely a mountain jacket but that's what it was designed for