My DB is a GP... a very good nanny friend of mine looks after a little boy same age as my charge... (ie just 2)
he was very very late at walking and would not even stannd or weight bear and put weight through 'standing up' legs at all ever.
(his aprenst are Drs to, and knew GPs dont even bat an eyelid until 18months!)
at 18months he went to GP and was referred.
at 21 months he just suddenly started walking.
as a result of this little boy (who my DB knows and has seen (in his house playing with his son type thing) we had lots of discussions about late walking and i asked him alot about it out of interest.
He told me that if they are cruising around the furniture and effectively walking while holding on (as they do around furniture) he would NOT worry at all until 2 years, and would be unlikely to suggest they do anything either.
Only if a child hasnt even attempted to walk or weight bear ever buy 18 months would he be concerned (hence Drs were concerned for my charges friend who had literally never put weight through hsi legs at 18 months) so, yes Drs were concerned, but all the tests etc they couldnt see what was wrong, but it was nothing at all... he was just a very late walker. and before they had found the non existnat problem he started walking himself
(he was also a VERY early talker, speeking loads and loads of words and short sentances at 13 months year old and has dropped his afternoon nap before his 2nd birthday.
Some chidlren are just faster at some things than others
as you child is cruising i wouldnt worry yet!