I have been using a fork and a normal cup with DD intermittently over the past 6 (or so) weeks - just to see how she reacts. Its funny, cause when she gets a bit fussy with food on her spoon, I use my fork - and she loves it. I haven't got any kiddies forks yet, probably should as I think she is ready to use one. She doesn't like to feed herself yet, we practice together if she is sitting on my lap (she holds the spoon/fork and I guide her hand).
DD is 3yr 8 months - DS is 6 months