. . . that enhanced any Speedy's presence.

They were available from the usual suppliers until recently. Should've bought one with the matching deployant and socked it away in the event a Speedy entered my collection.
I agree with you, Massi: strapped Speedies have a different character than those fitted with a bracelet. Some versions, like the Mk II and solid gold models, don't work well with straps, but for the most part a strap will bring out a different - and welcome - character.
Best,
Art