Strange really as feedback doen't need to be given back on a public forum, but the whole idea is for you to learn and improve the product from feedback, as in many ways there is nothing worse that everyone saying yes they are fine. Negative feedback can actually be very positive as it allows you identify probelems and rectify them, so come on every one get your comments in to Si, to give him a chance to develop the product so we can then buy them!!
Anyway having not seen the product, my biggest concern would be mud and silt getting between the nut and the outer cone section, which over time and with drying out, could solidify and make it difficult to undo the fixings?? Just a thought..