traineelectrician,
don't be put off by the negative knowalls , Hituf IS suitable for running surface 'clipped direct' as you intend, in fact it is suitable for ANY job SWA can do except buried direct in ground,
if people are going to make such sweeping statements they should back them up with a reg. number.
Hituf no cheaper than SWA but can be easier to gland off,
regards,