Yes.
KKD is a legend
The only thing i'm hoping for now is that he'll get tired of 'keeping and will give the gloves to Karthik.
If he does get test skippership, its going to be mighty hard for him to keep and captain and bat for 5 days-including running all the way down 55 yards (that is if he plays the slip, which he will probably) to cool generic bowler-say Sreesanth- down. He's going to get fatigued and collapse!
And KKD's already a regular in the test side and he can don the gloves.
I feel Dhoni and Karthik will be sharing the gloves in the future. But for that, Karthik should shrug off his temporary loss of form and should continue his scoring ways. Karthik will be a regular in all formats and it would help Dhoni also who can give keeping to Karthik and field thereby getting in touch with the bowlers easier.