It depends definitely on the app; we have been in the 2 camps. The problem is that often we are also asked to make the mobile web site and then you have 3 very similar things in Phonegap while native you need to write 3 different things. I do agree though that for a lot of apps native is faster to write if you target one platform.
And the Phonegap experience isn't really good unless you spend a huge amount of time. Webview is just not very good; you need something which is native but crossplatform to replace it; everything we tried so far (appmobi, appcelerator, rhomobile) actually was worse than Phonegap/jqm to get right. But we keep at it as we know what our clients want.
Often the Phonegap version is treated like a prototype; then the client saw it and knows what they want; after that they have it rewritten to native on the platform which makes them the most/gets the most attention (etc). Which is almost always iOS by the way.
And the Phonegap experience isn't really good unless you spend a huge amount of time. Webview is just not very good; you need something which is native but crossplatform to replace it; everything we tried so far (appmobi, appcelerator, rhomobile) actually was worse than Phonegap/jqm to get right. But we keep at it as we know what our clients want.
Often the Phonegap version is treated like a prototype; then the client saw it and knows what they want; after that they have it rewritten to native on the platform which makes them the most/gets the most attention (etc). Which is almost always iOS by the way.