Glad you like the Hebs Graemscifi

They are certainly striking eye catchers. There are classes for them at many shows now although some are still judged with 'any other native breed'. You can go the whole hog with competing at the highest level - a couple of years ago, well probably 3, it was a newcomer who won the Heb championship at the Highland Show. The Society could do with some fresh competition
As with Ryelands, they are no longer as rare as some, except the minority multihorns, which we keep. Most people can't be bothered with the extra care required to produce a good set of horns, but to my mind that characteristic is well worth preserving. Multihorns rarely get well placed in the showring though.
The meat, from those which don't make the grade, has the classic primitive slow-grown flavour and is now fairly well-known amongst chefs, so with a little work you can get a market. They need to be slaughtered for meat at 16 months, so if you don't have much ground, or can't put them on a conservation grazing site or hill to mature, then that could be a problem.
Otherwise, they are all that a good sheep could be - long lived, good black feet, excellent mothers with about 2/3rds twins and the occasional triplets, good mothering instincts, very milky, cross with commercials well especially as the primitives have a proportionally wider pelvis than many breeds. Crossbred lambs are a good marketable size and mature in their first year - they are also white (unless you use a Jacob or BWM tup) and that can be an advantage. They are relatively easy to handle, especially if you are experienced, being smallish. They can be a bit wild, but we have found them to be very calm as we treat them gently. They don't respond well to being 'ssshhhed' and flapped at, but will walk ahead nicely if you give them time and use sheep psychology

. There is a myth that you can't use a dog with Hebs but in fact several people do competition work with dogs trained on Hebs. We use our Jack Russell
The fleeces are variable - good ones can be sold to handspinners, but poor ones don't get much from the BWMB. An alternative is to get the skins tanned. A skin from a hogget is different to that of a lamb because it has been shorn, but can still make a lovely rug.
lou13, Hebs would be well worth investigating for you I think - of course I'm partial but not blinkered.