It seems to me that Gizmo has become the front runner and people have stopped waiting on Skype to appear. In a sense I can see why... beyond the fact that its just taking too long to arrive.
On a daily basis I use many different devices.... the N95, N800, N75 and of course my laptop. I recently installed Gizmo Project to my laptop. The one thing that binds all of my devices together in the Gizmo Project is my SIP Id. I don't have to worry about being reachable because I have different means.
This fluidity of the SIP ID points out Gizmo's advantages -- as well as the greater flexibility of SIP-based telephony. No more phone numbers, just one ID that works across a multitude of devices, from your office phone to your smartphone to your laptop. I have a feeling this scenario keeps the carriers up at night. And it may explain why Skype hasn't released an S60 client. I wonder if the carriers have somehow convinced Skype's parent, eBay, to delay this product. As a startup, Gizmo may not be as swayed by this pressure as eBay.
What do you think? Is Skype's inability to get out a mobile version due to pressure from wireless carriers?