Inconsistent (and frustrating/ugly) lists

Open the software centre. Select an item from the "All Software" toolbar button. Now select the same item from the "Installed" toolbar button. (The item you click on can be "Provided by Ubuntu" or alternatively a PPA or other repository.)

Expected result: same style of lists
Actual result: two different interfaces

This is inconsistent. Please see the attached screenshot.

Personally my preference is for the "All Software" style. I find the expandable sections currently found in "Installed" quite frustrating - I'd far rather just have a list.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.14.1
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Sat Apr 7 17:37:43 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120112)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)