I think that the answer is a "qualified" yes - meaning:
On the front:
The hub width of the LS wheels is not quite the same as the snowflake, so different spacers may be necessary on the axle between the fork stanchions from what, if any, the snowflake uses. The rotor carrier depth (or height if you will) is different, so spacers may be needed to get the rotor and caliper alignment correct. The LS has sealed front wheel bearings and I think that the snowflake's are not sealed. I think that the axle diameter is the same (?).
On the rear, the LS wheel uses slightly larger "diameter" brake shoes than the snowflake. I think that the other parts are compatible but you would need to get new rear shoes or have an even less effective rear brake than normal.