Is there a name for this?

[Tobus]

It may be that the hose were intended to represent a specific tie, or it may be that they were inspired at the general appearance of these ties.

It's all speculation, of course, but I think Bruce Scott had the right of it with the QOCH tie. Since he served with that unit, he wore that tie a lot, and was wearing it in the photo with the striped hose. It's hard to tell from that photo due to the size, quality, and very limited bit of tie showing. But comparing it to other photos of him, this is the same tie he's wearing with the striped hose. My bet is that the hose were made to match these colours reasonably well, and it just wasn't possible to incorporate the narrow yellow stripe into hand-knitted hose.

From the PM John D. Burgess website: