Glasgae Eskimos Origin? Source: Global Nonviolent Action Data Base

Extract from above link:

In preparation for the arrival of Proteus, local protesters formed a group called the Glasgow Eskimos to occupy the water with kayaks and rowboats alongside the CND, which would conduct land protests. In a rehearsal on 2 March, the Eskimos announced their intention to "cross the path of the Proteus and obstruct its entrance…Specific actions of nonviolent civil disobedience to obstruct each of the submarines as they arrive will be carried out until May." However the next day the protesters did not have enough boats to form a barrier across the Loch as planned, with three canoes and one dinghy in attendance. When the ship passed and anchored in Holy Loch, several members of the CND attempted to invade the boat by climbing onto the anchor chains until they were pried off by US sailors.

If the above is correct the name being attributed as originating from a throwaway remark by Captain Laning USN was in use at roughly three weeks before Laning and the USS Proteus arrived in the Clyde.