I bought the 30mm lens for my XPAN II some time ago but never got around to using it for any length of time. A weekend in Clifden prompted me to use it for all my shots. I'm still trying out Rollei IR 400 after years of using Kodak HIE.
Thanks very much everyone for your very positive comments. With an effective film speed of 3 ISO I do think that summer time is probably the best time to make use of it.