Yes this will work. As a proof of concept look at SDK keyboard2mouse example; it allocates host (USB0) and device (USB1) controllers data along with OSA variables in USB dedicated RAM.
Load Region LR_m_usb_ram (Base: 0x40100000, Size: 0x00000000, Max: 0x00002000, ABSOLUTE)
Execution Region ER_m_usb_ram (Base: 0x40100000, Size: 0x00001d60, Max: 0x00002000, ABSOLUTE, UNINIT)
Base Addr Size Type Attr Idx E Section Name Object
0x40100000 0x000000d0 Zero RW 1614 m_usb_global usb_osa_bm.o
0x401000d0 0x00000030 PAD
0x40100100 0x00000028 Zero RW 2103 m_usb_global usb_device_hid.o
0x40100128 0x00000018 PAD
0x40100140 0x00000080 Zero RW 2186 m_usb_global usb_device_class.o
0x401001c0 0x00000040 PAD
0x40100200 0x00001560 Zero RW 2275 m_usb_global usb_device_lpcip3511.o
0x40101760 0x00000070 Zero RW 2497 m_usb_global usb_device_dci.o
0x401017d0 0x00000030 PAD
0x40101800 0x00000560 Zero RW 3327 m_usb_global usb_host_ohci.o
