honestly, when are babies only in walkers? those of us that use them for short periods of time through the day ( i used to use ours when i was getting tea ready) still put babies on the floor!!
FWIW DD2 was a lazy sod in the movement department, but has been talking since about 12 months, speaks very clearly now with sentences of 5+ words. DD1 who was great in the movement department, did everything on time, was walking independantly at 12 months, was slow to talk, and even now doesnt speak her words clearly