[bylo]

First impressions:
• awfully expensive, at least from Canada, compared to buying SIMs locally on arrival, e.g. €60 for Germany, €80 for US.
• relatively small selection of countries, e.g. Germany but not Austria, Australia but not NZ.
• in the case of US, at least, SIM lasts only 30 days before top-up.
• SIMs appear to be from MVNOs rather than incumbent carriers (don't know how important that is, e.g. for coverage, speed, reliability, support.)