Your guys haven't complained for one reason- because they know no better!! 
Give them an SLX & I guarantee you Ian, they wont want to use the brodex poles ever again!
I'm a little surprised by your view/attitude on this, I can only assume you spend too much time in the office these days & have lost touch with working a pole every day?
The financial difference in investment is minuscule to what you would gain from different poles! 
They do actually know the difference, if you'd read the post fully, we've used other carbon fibre poles in the past and have carbon fibre poles that we still use, however up to 25ft the weight is not an issue, yes the 36ft is noticeably heavier, however it is only used on odd occasions so this is not really an issue.
I do still get out on the windows and cover for holidays/absences so I don't think I've "lost touch" with working with a pole. I'm actually out on Monday as a team of 4 doing a property that is cleaned on a twice a year basis for £1200+vat, we'll be using the 60' CF, 45' CF, 2 x 36' Hydras as well as smaller poles and ladders. I'll let you know after that if the poles are too heavy for my little arms.

The financial difference for a sole trader may be miniscule (though I don't think a 400% price difference on anything is "miniscule". However times that by three vans, three poles in a van, with an average life on a CF pole of around 6 months (SLX may well be different/longer I don't know) as opposed to 3+ years and the difference is not so miniscule. It would cost us around £3000 to kit out the vans with SLX poles as opposed to around £700 for Brodex Hydra's. A £2,300 difference

In no way am I knocking Alex's poles, I've handled them and others at the shows and they are super poles, they are just not for us running a commercial business where even with the best will, employees who have targets to hit will not treat the equipment like you do as a sole trader.
I get a bit vexed when I read comments like "throw it in the bin", if people don't want to use a particular supplier then that's fine, sing the merits of your chosen supplier by all means but don't do it by trying to smash the reputation of others.
Choice and the freedom to choose are what keeps competition going.
We will be looking for a new 60' pole in the New Year and I may well be coming to Alex to look at his deals on the Supermax, as well as the Brodex Carbon Light and the Ionics Swift.