The font looks pretty great on an LCD and is readable for titles and lists but is a stretch for long runs of text. I’m interested to know how it looks on a CRT - it could either blur enough that the open counters just look light or it could become an unreadable mess. It probably depends very much on the quality of the CRT and the connection (RGB should be okay, composite probably not). The yellow/cyan fringing on the Spectrum could play real havoc with this one.
The darker “full” variant has more weight to it and might work better in some fuzzy environments.