[Advantage X7500, MDA Ameo ROM Development] eaglesteve:
It's actually not the question of having multiple keyboard but the kind of keyboard which caused the selection problem.

I just tried out Phraze-it, and I could not select it unless I reboot after sipchange. Same for keyboards such as happy tapping and finger touch.

However,I have no problem loading Tengo Thumb AND Tengo 2.1 (which includes Tengo nano), AND CE star AND Penpower all at the same time and freely switch from anyone to another without having to reboot.

Tengo used to have similar problems, but that has apparently been resolved with the current version.

BTW when I tried out Phrase-it I noticed that every letter I typed required 2 taps. Is this normal way of using this keyboard or I'm not doing it right? How fast can you type after getting used to it?

For your interest I've also measured the size of keys and also size of keyboard for the following:

Finger touch layout 1

Size of key in portrait : 7.5mm x7.5mm =56.25 sq mm

Size of key in landscape : 7.5x10mm=75 sq mm

Height: 37.5mm

Access to all ABC keys=yes

Direct access to numbers=yes

Happy tapping

31mm height

Landscape mode

10mmx8mm=80mm2

Portrait mode

7.5mmx8mm=60mm2

Access to all ABC keys=yes

Direct access to numbers=no

Tengo nano

key size 18x6 .=108 sq mm

Height 24mm

Access to all ABC keys=yes

Direct access to numbers=yes

Tengo 2.1

key size 25x6 =150 sq mm

Height 30mm

Access to all ABC keys=yes

Direct access to numbers=no

Tengo Thumb

key size 26x14=364 sq mm

Height 53 mm

Access to all ABC keys=yes

Direct access to numbers=yes

Phraze-it

170.4 sq mm key size

Height = 44mm for 3 rows layout, and 46 mm for 2 rows layout. The other layout are too tall for considerations.

Access to all ABC keys=No

Direct access to numbers=No

TouchPal

154 sq mm key size

Height = 44mm

Access to all ABC keys=yes

Direct access to numbers=No

Standard keyboard (small key)

Height 25 mm

5.6 x5mm=28mm2

Access to all ABC keys=yes

Direct access to numbers=yes

Standard keyboard (large key)

Height=25mm

Key size = 39 sq mm

Access to all ABC keys=yes

Direct access to numbers=No

If you do not mind the height of the keyboard, Tengo Thumb is actually the easiest keyboard available for fast thumb typing. With it, you need not scribe as there is a switch to turn off predictive text, so you could type letter by letter for password etc,similar to Phraze-it. You are also able to press all numbers directly without first toggling to it. Look at the size of its key! It's good for even extremely large fingers. You need not press twice to get each letter like Phraze-it.

If you use this for your thumb typing, your SIP selection problem would be history.

edit: I need correct my earlier statement. It IS the number of SIP rather than the identity that causes selection problem. I am able to freely select about 5 of them. ANY 5 of them it seems, after just one initial reboot. Tip: take out the battery just before reboot helps to bring in more selectable SIP. Now I have CeStar, Penpower, Happy Tapping (with iPhone skin), Tengo, Finger Touch all selectable without needing reboot. TouchPal, Phraze-it and Tengo Thumb could not be selected unless I reboot. Of course, all standard ones such as phone pad are all okay.