If one installs vanilla -> SI (1.2.0.201) -> SI 1.2.0.416 patch : oblivion launcher && Oblivion - Textures - Compressed.bsa stay the same (v1)
if one installs vanilla -> 1.2.0.416 patch (non SI) : oblivion launcher && Oblivion - Textures - Compressed.bsa change !!
What I did was install vanilla (0.1.0.228 original) - backed up with mTES4 - install 1.2.0.416 patch (non SI) - compared with vanilla - backed up with mTES4 - restored vanilla (0.1.0.228 original) - installed SI - install 1.2.0.416 patch (SI) - backed up with mTES4 - compared with vanilla - compared with 1.2.0.416 patch (non SI) - restored vanilla (0.1.0.228 original) - installed 1.1.511 - backed up with mTES4 - installed SI - install 1.2.0.416 patch (SI) - compared with vanilla - compared with 1.2.0416 non SI
http://s1032.photobucket.com/albums/a406/dardanov/OBLIVION%20PATCHES%20COMPARISONS/
I believe vanilla -> 1.1.511 -> SI (1.2.0.201) -> SI 1.2.0.416 is the way to go - not sure if the textures.bsa/launcher update is needed and why it was not included in SI - will open them up and see
Notice launcher size stays the same but CRC changes
shaderpackage001.sdp never changes - shows in differences due to date changed but CRC same
WRYE BASH - grab 1.1.511 esm -http://s1032.photobucket.com/albums/a406/dardanov/OBLIVION%20PATCHES%20COMPARISONS/?action=view¤t=120416nonSIvs11511showALL.jpg (http://s1032.photobucket.com/albums/a406/dardanov/OBLIVION%20PATCHES%20COMPARISONS/?action=view¤t=120416nonSIvs11511.jpg) - so you are good to go for a dual boot SI/1.1 (1.2.0416 non SI actually) setup !!!