[peterdoo]

I would assume that they upload a local Lyca IMSI to the SIM once they see the SIM in a Lyca country. They already had some similar offers in the past for two countries combinations (e.g. UK-Ireland). Like Togglemobile but without assigning a local phone number and with automatic IMSI upload.

That would be in line with only offering it in Lyca countries and with the fact that they instruct to wait for a text indicating that the roaming is ready.

Even so, they seem to give out an UK IP address in all Lyca countries.