Steve,
There are a number of products on the market which probably comply to the Woolsafe standard but have failed to gain approval simply because the manufacturers have decided not to commit to the expense of the approval process and the on-going annual fees. One Step fineline is probably one such.
There are other products that do not comply to the standard but are unlikely to cause noticeable damage, though they are not ideally suited to wool fibre. The product you mentioned being one such.
There are also products which are unsuitable for various reasons and some responsible manufacturers will openly admit to their un-suitability - for example Prochem Double Clean.
The way I see it is that if we are to accept that the Woolsafe standard has been set by an independent and knowledgeable body to define a group of products that are best suited to the purpose, then as professionals we have a duty of care to generally use products that adhere to, or at lest are close to that standard.
On occasions, in our professional judgement, it may be deemed necessary to over-step these boundaries to achieve our objectives. That, I believe, is reasonable in the same way that an oncologist will administer chemotherapy, in the certain knowledge that it will make the patient sometime very ill, but in the hope that the final outcome will justify the short-term damage done to the patients system. A clear example of the ends justifying the means.
What I do not consider to be professional behaviour is for a CC to habitually use "Good strong stuff" with total disregard for any consequential damage done, simply because it is the easiest, quickest way to make a carpet look clean, when a different methodology could achieve the same cleanliness without the consequential detriment.
...........Just one mans view.
