I didn't have them when I went last winter including Austrian ski resort albeit not high up. No issues albeit appreciate I was officially illegal as it applies to visitors et.Forgot to mention, the reason I need them is that I’m going to Germany/Austria for Christmas and winter tyres are a legal requirement so trying to do it in the most efficient way possible.
I didn't intentionally choose to not have them I just forgot about it as the 6.1 was new to me and my old 5.1 usually had M&S on it all year round.
I got a set of Devonports with winter tyres for a great price for this year that will be going on soon.