My pleasure and am pleased that you found the information helpful - especially as not many people are aware that some roses contain their own natural rooting compound and therefore by adding extra artificial rooting hormone it normally inhibits growth.
However I would just say that it might be best not to get too excited yet - as propagating roses in water is not normally very successful and although there a few varieties that may do so - most do not and although you are seeing signs that look like they are starting to root - the new growth is normally just from the stored energy left in the canes.
Although I'm more than sure that I've mentioned this before - roses are known to be one of the easiest plants to propagate and all roses regardless of type are easy to propagate - if done correctly and at the right time of year and it is only some of the newer hybrid tea and grandiflora roses that prove to be a little more difficult and because of that are normally propagated by grafting - instead of stem cuttings