The Designer 1 by Viking has a two-height presser foot control, controled by a button on the front panel. Push it once, the presser foot goes up halfway. Push it again, the presser foot goes up a little more. Very nice feature. The D1 doesn't have a "traditional" presser foot lever; you press on the foot control to start sewing and the presser foot drops down automatically.
I'm not sure which other Viking machines have this feature.
--Welmoed
I have only seen a few machines but all were plagued with the same quirk,
>viz., the presser foot has to be held up with one hand to keep it in the
>highest position. This is most inconvenient when working with heavy fabric
>and particularly so for a right handed person.
>
>Are all machines like this and if so, why?
>
>js