Double Memory Usage?

Almost all textures are PVRTC 4 bit. Latest Unity Pro/Xcode/iOS SDK built for armv7 with Strip ByteCode. All Advanced textures have Read/Write unchecked. Mesh Compression High. Using prime31 StoreKit and Twitter framework. Xcode Release Target. I have a bunch of objects pooled for later use. These objects are already placed in a scene, which is LoadLevelAdditiveAsync at the start of the game. I am also calling Resources.UnloadUnusedAssets and GC.Collect.

Editor.Log
Textures      	18.6 mb	 	36.0%
Meshes        	3.8 mb	 	7.4%
Animations    	9.4 mb	 	18.2%
Sounds        	5.5 mb	 	10.7%
Shaders       	9.0 kb	 	0.0%
Other Assets  	990.6 kb	1.9%
Levels        	6.3 mb	 	12.1%
Scripts       	776.6 kb	 1.5%
Included DLLs 	3.9 mb	 	7.6%
File headers  	2.4 mb	 	4.6%
Complete size 	51.6 mb	 	100.0%

Device connected to Unity Profiler
Total			43.6 MB
Textures		18.6 MB
Meshes			8.0 MB
Materials		67.8 KB
AnimationClips		2.6 MB
AudioClips		5.6 MB
Assets			14,298
GameObjects in Scene	30,476

iPhone_Profiler.h mono-memory allocated heap 6,660,096 bytes

Instruments Real Mem for build with empty scene	19.75 MB
Instruments Real Mem for actual build		108.48 MB  ???

Is this expected?